3 * Main Mesa data structures.
5 * Please try to mark derived values with a leading underscore ('_').
9 * Mesa 3-D graphics library
12 * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
14 * Permission is hereby granted, free of charge, to any person obtaining a
15 * copy of this software and associated documentation files (the "Software"),
16 * to deal in the Software without restriction, including without limitation
17 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
18 * and/or sell copies of the Software, and to permit persons to whom the
19 * Software is furnished to do so, subject to the following conditions:
21 * The above copyright notice and this permission notice shall be included
22 * in all copies or substantial portions of the Software.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
25 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
27 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
28 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
39 #include <GL/internal/glcore.h> /* GLimports/GLexports/GLcontextModes */
40 #include "config.h" /* Hardwired parameters */
41 #include "glapitable.h"
43 #include "math/m_matrix.h" /* GLmatrix */
47 * Color channel data type.
50 typedef GLubyte GLchan
;
52 #define CHAN_MAXF 255.0F
53 #define CHAN_TYPE GL_UNSIGNED_BYTE
55 typedef GLushort GLchan
;
56 #define CHAN_MAX 65535
57 #define CHAN_MAXF 65535.0F
58 #define CHAN_TYPE GL_UNSIGNED_SHORT
60 typedef GLfloat GLchan
;
62 #define CHAN_MAXF 1.0F
63 #define CHAN_TYPE GL_FLOAT
65 #error "illegal number of color channel bits"
70 * Stencil buffer data type.
73 typedef GLubyte GLstencil
;
74 #elif STENCIL_BITS==16
75 typedef GLushort GLstencil
;
77 # error "illegal number of stencil bits"
82 * Fixed point data type.
86 * Fixed point arithmetic macros
88 #ifndef FIXED_FRAC_BITS
89 #define FIXED_FRAC_BITS 11
92 #define FIXED_SHIFT FIXED_FRAC_BITS
93 #define FIXED_ONE (1 << FIXED_SHIFT)
94 #define FIXED_HALF (1 << (FIXED_SHIFT-1))
95 #define FIXED_FRAC_MASK (FIXED_ONE - 1)
96 #define FIXED_INT_MASK (~FIXED_FRAC_MASK)
97 #define FIXED_EPSILON 1
98 #define FIXED_SCALE ((float) FIXED_ONE)
99 #define FIXED_DBL_SCALE ((double) FIXED_ONE)
100 #define FloatToFixed(X) (IROUND((X) * FIXED_SCALE))
101 #define FixedToDouble(X) ((X) * (1.0 / FIXED_DBL_SCALE))
102 #define IntToFixed(I) ((I) << FIXED_SHIFT)
103 #define FixedToInt(X) ((X) >> FIXED_SHIFT)
104 #define FixedToUns(X) (((unsigned int)(X)) >> FIXED_SHIFT)
105 #define FixedCeil(X) (((X) + FIXED_ONE - FIXED_EPSILON) & FIXED_INT_MASK)
106 #define FixedFloor(X) ((X) & FIXED_INT_MASK)
107 #define FixedToFloat(X) ((X) * (1.0F / FIXED_SCALE))
108 #define PosFloatToFixed(X) FloatToFixed(X)
109 #define SignedFloatToFixed(X) FloatToFixed(X)
114 * \name Some forward type declarations
117 struct _mesa_HashTable
;
118 struct gl_pixelstore_attrib
;
119 struct gl_texture_format
;
120 struct gl_texture_image
;
121 struct gl_texture_object
;
122 typedef struct __GLcontextRec GLcontext
;
123 typedef struct __GLcontextModesRec GLvisual
;
124 typedef struct gl_framebuffer GLframebuffer
;
130 * Indexes for vertex program attributes.
131 * GL_NV_vertex_program aliases generic attributes over the conventional
132 * attributes. In GL_ARB_vertex_program shader the aliasing is optional.
133 * In GL_ARB_vertex_shader / OpenGL 2.0 the aliasing is disallowed (the
134 * generic attributes are distinct/separate).
139 VERT_ATTRIB_WEIGHT
= 1,
140 VERT_ATTRIB_NORMAL
= 2,
141 VERT_ATTRIB_COLOR0
= 3,
142 VERT_ATTRIB_COLOR1
= 4,
145 VERT_ATTRIB_SEVEN
= 7,
146 VERT_ATTRIB_TEX0
= 8,
147 VERT_ATTRIB_TEX1
= 9,
148 VERT_ATTRIB_TEX2
= 10,
149 VERT_ATTRIB_TEX3
= 11,
150 VERT_ATTRIB_TEX4
= 12,
151 VERT_ATTRIB_TEX5
= 13,
152 VERT_ATTRIB_TEX6
= 14,
153 VERT_ATTRIB_TEX7
= 15,
154 VERT_ATTRIB_GENERIC0
= 16,
155 VERT_ATTRIB_GENERIC1
= 17,
156 VERT_ATTRIB_GENERIC2
= 18,
157 VERT_ATTRIB_GENERIC3
= 19,
158 VERT_ATTRIB_MAX
= 16 /* XXX not counting generic attribs yet */
162 * Bitflags for vertex attributes.
163 * These are used in bitfields in many places.
166 #define VERT_BIT_POS (1 << VERT_ATTRIB_POS)
167 #define VERT_BIT_WEIGHT (1 << VERT_ATTRIB_WEIGHT)
168 #define VERT_BIT_NORMAL (1 << VERT_ATTRIB_NORMAL)
169 #define VERT_BIT_COLOR0 (1 << VERT_ATTRIB_COLOR0)
170 #define VERT_BIT_COLOR1 (1 << VERT_ATTRIB_COLOR1)
171 #define VERT_BIT_FOG (1 << VERT_ATTRIB_FOG)
172 #define VERT_BIT_SIX (1 << VERT_ATTRIB_SIX)
173 #define VERT_BIT_SEVEN (1 << VERT_ATTRIB_SEVEN)
174 #define VERT_BIT_TEX0 (1 << VERT_ATTRIB_TEX0)
175 #define VERT_BIT_TEX1 (1 << VERT_ATTRIB_TEX1)
176 #define VERT_BIT_TEX2 (1 << VERT_ATTRIB_TEX2)
177 #define VERT_BIT_TEX3 (1 << VERT_ATTRIB_TEX3)
178 #define VERT_BIT_TEX4 (1 << VERT_ATTRIB_TEX4)
179 #define VERT_BIT_TEX5 (1 << VERT_ATTRIB_TEX5)
180 #define VERT_BIT_TEX6 (1 << VERT_ATTRIB_TEX6)
181 #define VERT_BIT_TEX7 (1 << VERT_ATTRIB_TEX7)
182 #define VERT_BIT_GENERIC0 (1 << VERT_ATTRIB_GENERIC0)
183 #define VERT_BIT_GENERIC1 (1 << VERT_ATTRIB_GENERIC1)
184 #define VERT_BIT_GENERIC2 (1 << VERT_ATTRIB_GENERIC2)
185 #define VERT_BIT_GENERIC3 (1 << VERT_ATTRIB_GENERIC3)
187 #define VERT_BIT_TEX(u) (1 << (VERT_ATTRIB_TEX0 + (u)))
188 #define VERT_BIT_GENERIC(g) (1 << (VERT_ATTRIB_GENERIC0 + (g)))
192 * Indexes for vertex program result attributes
195 #define VERT_RESULT_HPOS 0
196 #define VERT_RESULT_COL0 1
197 #define VERT_RESULT_COL1 2
198 #define VERT_RESULT_FOGC 3
199 #define VERT_RESULT_TEX0 4
200 #define VERT_RESULT_TEX1 5
201 #define VERT_RESULT_TEX2 6
202 #define VERT_RESULT_TEX3 7
203 #define VERT_RESULT_TEX4 8
204 #define VERT_RESULT_TEX5 9
205 #define VERT_RESULT_TEX6 10
206 #define VERT_RESULT_TEX7 11
207 #define VERT_RESULT_PSIZ 12
208 #define VERT_RESULT_BFC0 13
209 #define VERT_RESULT_BFC1 14
210 #define VERT_RESULT_MAX 15
215 * Indexes for fragment program input attributes.
219 FRAG_ATTRIB_WPOS
= 0,
220 FRAG_ATTRIB_COL0
= 1,
221 FRAG_ATTRIB_COL1
= 2,
222 FRAG_ATTRIB_FOGC
= 3,
223 FRAG_ATTRIB_TEX0
= 4,
224 FRAG_ATTRIB_TEX1
= 5,
225 FRAG_ATTRIB_TEX2
= 6,
226 FRAG_ATTRIB_TEX3
= 7,
227 FRAG_ATTRIB_TEX4
= 8,
228 FRAG_ATTRIB_TEX5
= 9,
229 FRAG_ATTRIB_TEX6
= 10,
230 FRAG_ATTRIB_TEX7
= 11,
235 * Bitflags for fragment program input attributes.
238 #define FRAG_BIT_WPOS (1 << FRAG_ATTRIB_WPOS)
239 #define FRAG_BIT_COL0 (1 << FRAG_ATTRIB_COL0)
240 #define FRAG_BIT_COL1 (1 << FRAG_ATTRIB_COL1)
241 #define FRAG_BIT_FOGC (1 << FRAG_ATTRIB_FOGC)
242 #define FRAG_BIT_TEX0 (1 << FRAG_ATTRIB_TEX0)
243 #define FRAG_BIT_TEX1 (1 << FRAG_ATTRIB_TEX1)
244 #define FRAG_BIT_TEX2 (1 << FRAG_ATTRIB_TEX2)
245 #define FRAG_BIT_TEX3 (1 << FRAG_ATTRIB_TEX3)
246 #define FRAG_BIT_TEX4 (1 << FRAG_ATTRIB_TEX4)
247 #define FRAG_BIT_TEX5 (1 << FRAG_ATTRIB_TEX5)
248 #define FRAG_BIT_TEX6 (1 << FRAG_ATTRIB_TEX6)
249 #define FRAG_BIT_TEX7 (1 << FRAG_ATTRIB_TEX7)
251 #define FRAG_BITS_TEX_ANY (FRAG_BIT_TEX0| \
263 * Fragment program results
266 #define FRAG_RESULT_COLR 0
267 #define FRAG_RESULT_COLH 1
268 #define FRAG_RESULT_DEPR 2
269 #define FRAG_RESULT_MAX 3
274 * Indexes for all renderbuffers
277 BUFFER_FRONT_LEFT
= 0, /* the four standard color buffers */
278 BUFFER_BACK_LEFT
= 1,
279 BUFFER_FRONT_RIGHT
= 2,
280 BUFFER_BACK_RIGHT
= 3,
281 BUFFER_AUX0
= 4, /* optional aux buffer */
288 BUFFER_COLOR0
= 11, /* generic renderbuffers */
300 * Bit flags for all renderbuffers
302 #define BUFFER_BIT_FRONT_LEFT (1 << BUFFER_FRONT_LEFT)
303 #define BUFFER_BIT_BACK_LEFT (1 << BUFFER_BACK_LEFT)
304 #define BUFFER_BIT_FRONT_RIGHT (1 << BUFFER_FRONT_RIGHT)
305 #define BUFFER_BIT_BACK_RIGHT (1 << BUFFER_BACK_RIGHT)
306 #define BUFFER_BIT_AUX0 (1 << BUFFER_AUX0)
307 #define BUFFER_BIT_AUX1 (1 << BUFFER_AUX1)
308 #define BUFFER_BIT_AUX2 (1 << BUFFER_AUX2)
309 #define BUFFER_BIT_AUX3 (1 << BUFFER_AUX3)
310 #define BUFFER_BIT_DEPTH (1 << BUFFER_DEPTH)
311 #define BUFFER_BIT_STENCIL (1 << BUFFER_STENCIL)
312 #define BUFFER_BIT_ACCUM (1 << BUFFER_ACCUM)
313 #define BUFFER_BIT_COLOR0 (1 << BUFFER_COLOR0)
314 #define BUFFER_BIT_COLOR1 (1 << BUFFER_COLOR1)
315 #define BUFFER_BIT_COLOR2 (1 << BUFFER_COLOR2)
316 #define BUFFER_BIT_COLOR3 (1 << BUFFER_COLOR3)
317 #define BUFFER_BIT_COLOR4 (1 << BUFFER_COLOR4)
318 #define BUFFER_BIT_COLOR5 (1 << BUFFER_COLOR5)
319 #define BUFFER_BIT_COLOR6 (1 << BUFFER_COLOR6)
320 #define BUFFER_BIT_COLOR7 (1 << BUFFER_COLOR7)
324 * Data structure for color tables
326 struct gl_color_table
328 GLenum InternalFormat
; /**< The user-specified format */
329 GLenum _BaseFormat
; /**< GL_ALPHA, GL_RGBA, GL_RGB, etc */
330 GLuint Size
; /**< number of entries (rows) in table */
331 GLvoid
*Table
; /**< points to data of <Type> */
332 GLenum Type
; /**< GL_UNSIGNED_BYTE or GL_FLOAT */
337 GLubyte LuminanceSize
;
338 GLubyte IntensitySize
;
343 * \name Bit flags used for updating material values.
346 #define MAT_ATTRIB_FRONT_AMBIENT 0
347 #define MAT_ATTRIB_BACK_AMBIENT 1
348 #define MAT_ATTRIB_FRONT_DIFFUSE 2
349 #define MAT_ATTRIB_BACK_DIFFUSE 3
350 #define MAT_ATTRIB_FRONT_SPECULAR 4
351 #define MAT_ATTRIB_BACK_SPECULAR 5
352 #define MAT_ATTRIB_FRONT_EMISSION 6
353 #define MAT_ATTRIB_BACK_EMISSION 7
354 #define MAT_ATTRIB_FRONT_SHININESS 8
355 #define MAT_ATTRIB_BACK_SHININESS 9
356 #define MAT_ATTRIB_FRONT_INDEXES 10
357 #define MAT_ATTRIB_BACK_INDEXES 11
358 #define MAT_ATTRIB_MAX 12
360 #define MAT_ATTRIB_AMBIENT(f) (MAT_ATTRIB_FRONT_AMBIENT+(f))
361 #define MAT_ATTRIB_DIFFUSE(f) (MAT_ATTRIB_FRONT_DIFFUSE+(f))
362 #define MAT_ATTRIB_SPECULAR(f) (MAT_ATTRIB_FRONT_SPECULAR+(f))
363 #define MAT_ATTRIB_EMISSION(f) (MAT_ATTRIB_FRONT_EMISSION+(f))
364 #define MAT_ATTRIB_SHININESS(f)(MAT_ATTRIB_FRONT_SHININESS+(f))
365 #define MAT_ATTRIB_INDEXES(f) (MAT_ATTRIB_FRONT_INDEXES+(f))
367 #define MAT_INDEX_AMBIENT 0
368 #define MAT_INDEX_DIFFUSE 1
369 #define MAT_INDEX_SPECULAR 2
371 #define MAT_BIT_FRONT_AMBIENT (1<<MAT_ATTRIB_FRONT_AMBIENT)
372 #define MAT_BIT_BACK_AMBIENT (1<<MAT_ATTRIB_BACK_AMBIENT)
373 #define MAT_BIT_FRONT_DIFFUSE (1<<MAT_ATTRIB_FRONT_DIFFUSE)
374 #define MAT_BIT_BACK_DIFFUSE (1<<MAT_ATTRIB_BACK_DIFFUSE)
375 #define MAT_BIT_FRONT_SPECULAR (1<<MAT_ATTRIB_FRONT_SPECULAR)
376 #define MAT_BIT_BACK_SPECULAR (1<<MAT_ATTRIB_BACK_SPECULAR)
377 #define MAT_BIT_FRONT_EMISSION (1<<MAT_ATTRIB_FRONT_EMISSION)
378 #define MAT_BIT_BACK_EMISSION (1<<MAT_ATTRIB_BACK_EMISSION)
379 #define MAT_BIT_FRONT_SHININESS (1<<MAT_ATTRIB_FRONT_SHININESS)
380 #define MAT_BIT_BACK_SHININESS (1<<MAT_ATTRIB_BACK_SHININESS)
381 #define MAT_BIT_FRONT_INDEXES (1<<MAT_ATTRIB_FRONT_INDEXES)
382 #define MAT_BIT_BACK_INDEXES (1<<MAT_ATTRIB_BACK_INDEXES)
385 #define FRONT_MATERIAL_BITS (MAT_BIT_FRONT_EMISSION | \
386 MAT_BIT_FRONT_AMBIENT | \
387 MAT_BIT_FRONT_DIFFUSE | \
388 MAT_BIT_FRONT_SPECULAR | \
389 MAT_BIT_FRONT_SHININESS | \
390 MAT_BIT_FRONT_INDEXES)
392 #define BACK_MATERIAL_BITS (MAT_BIT_BACK_EMISSION | \
393 MAT_BIT_BACK_AMBIENT | \
394 MAT_BIT_BACK_DIFFUSE | \
395 MAT_BIT_BACK_SPECULAR | \
396 MAT_BIT_BACK_SHININESS | \
397 MAT_BIT_BACK_INDEXES)
399 #define ALL_MATERIAL_BITS (FRONT_MATERIAL_BITS | BACK_MATERIAL_BITS)
403 #define EXP_TABLE_SIZE 512 /**< Specular exponent lookup table sizes */
404 #define SHINE_TABLE_SIZE 256 /**< Material shininess lookup table sizes */
407 * Material shininess lookup table.
411 struct gl_shine_tab
*next
, *prev
;
412 GLfloat tab
[SHINE_TABLE_SIZE
+1];
419 * Light source state.
423 struct gl_light
*next
; /**< double linked list with sentinel */
424 struct gl_light
*prev
;
426 GLfloat Ambient
[4]; /**< ambient color */
427 GLfloat Diffuse
[4]; /**< diffuse color */
428 GLfloat Specular
[4]; /**< specular color */
429 GLfloat EyePosition
[4]; /**< position in eye coordinates */
430 GLfloat EyeDirection
[4]; /**< spotlight dir in eye coordinates */
431 GLfloat SpotExponent
;
432 GLfloat SpotCutoff
; /**< in degrees */
433 GLfloat _CosCutoff
; /**< = MAX(0, cos(SpotCutoff)) */
434 GLfloat ConstantAttenuation
;
435 GLfloat LinearAttenuation
;
436 GLfloat QuadraticAttenuation
;
437 GLboolean Enabled
; /**< On/off flag */
440 * \name Derived fields
443 GLbitfield _Flags
; /**< State */
445 GLfloat _Position
[4]; /**< position in eye/obj coordinates */
446 GLfloat _VP_inf_norm
[3]; /**< Norm direction to infinite light */
447 GLfloat _h_inf_norm
[3]; /**< Norm( _VP_inf_norm + <0,0,1> ) */
448 GLfloat _NormDirection
[4]; /**< normalized spotlight direction */
449 GLfloat _VP_inf_spot_attenuation
;
451 GLfloat _SpotExpTable
[EXP_TABLE_SIZE
][2]; /**< to replace a pow() call */
452 GLfloat _MatAmbient
[2][3]; /**< material ambient * light ambient */
453 GLfloat _MatDiffuse
[2][3]; /**< material diffuse * light diffuse */
454 GLfloat _MatSpecular
[2][3]; /**< material spec * light specular */
455 GLfloat _dli
; /**< CI diffuse light intensity */
456 GLfloat _sli
; /**< CI specular light intensity */
466 GLfloat Ambient
[4]; /**< ambient color */
467 GLboolean LocalViewer
; /**< Local (or infinite) view point? */
468 GLboolean TwoSide
; /**< Two (or one) sided lighting? */
469 GLenum ColorControl
; /**< either GL_SINGLE_COLOR
470 * or GL_SEPARATE_SPECULAR_COLOR */
479 GLfloat Attrib
[MAT_ATTRIB_MAX
][4];
484 * Accumulation buffer attribute group (GL_ACCUM_BUFFER_BIT)
486 struct gl_accum_attrib
488 GLfloat ClearColor
[4]; /**< Accumulation buffer clear color */
493 * Color buffer attribute group (GL_COLOR_BUFFER_BIT).
495 struct gl_colorbuffer_attrib
497 GLuint ClearIndex
; /**< Index to use for glClear */
498 GLclampf ClearColor
[4]; /**< Color to use for glClear */
500 GLuint IndexMask
; /**< Color index write mask */
501 GLubyte ColorMask
[4]; /**< Each flag is 0xff or 0x0 */
503 GLenum DrawBuffer
[MAX_DRAW_BUFFERS
]; /**< Which buffer to draw into */
506 * \name alpha testing
509 GLboolean AlphaEnabled
; /**< Alpha test enabled flag */
510 GLenum AlphaFunc
; /**< Alpha test function */
511 GLclampf AlphaRef
; /**< Alpha reference value */
518 GLboolean BlendEnabled
; /**< Blending enabled flag */
519 GLenum BlendSrcRGB
; /**< Blending source operator */
520 GLenum BlendDstRGB
; /**< Blending destination operator */
521 GLenum BlendSrcA
; /**< GL_INGR_blend_func_separate */
522 GLenum BlendDstA
; /**< GL_INGR_blend_func_separate */
523 GLenum BlendEquationRGB
; /**< Blending equation */
524 GLenum BlendEquationA
; /**< GL_EXT_blend_equation_separate */
525 GLfloat BlendColor
[4]; /**< Blending color */
532 GLenum LogicOp
; /**< Logic operator */
533 GLboolean IndexLogicOpEnabled
; /**< Color index logic op enabled flag */
534 GLboolean ColorLogicOpEnabled
; /**< RGBA logic op enabled flag */
535 GLboolean _LogicOpEnabled
; /**< RGBA logic op + EXT_blend_logic_op enabled flag */
538 GLboolean DitherFlag
; /**< Dither enable flag */
540 GLenum ClampFragmentColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
541 GLenum ClampReadColor
; /**< GL_TRUE, GL_FALSE or GL_FIXED_ONLY_ARB */
546 * Current attribute group (GL_CURRENT_BIT).
548 struct gl_current_attrib
551 * \name Values valid only when FLUSH_VERTICES has been called.
554 GLfloat Attrib
[VERT_ATTRIB_MAX
][4]; /**< Current vertex attributes
555 * indexed by VERT_ATTRIB_* */
556 GLfloat Index
; /**< Current color index */
557 GLboolean EdgeFlag
; /**< Current edge flag */
561 * \name Values are always valid.
563 * \note BTW, note how similar this set of attributes is to the SWvertex
564 * data type in the software rasterizer...
567 GLfloat RasterPos
[4]; /**< Current raster position */
568 GLfloat RasterDistance
; /**< Current raster distance */
569 GLfloat RasterColor
[4]; /**< Current raster color */
570 GLfloat RasterSecondaryColor
[4]; /**< Current raster secondary color */
571 GLfloat RasterIndex
; /**< Current raster index */
572 GLfloat RasterTexCoords
[MAX_TEXTURE_UNITS
][4];/**< Current raster texcoords */
573 GLboolean RasterPosValid
; /**< Raster pos valid flag */
579 * Depth buffer attribute group (GL_DEPTH_BUFFER_BIT).
581 struct gl_depthbuffer_attrib
583 GLenum Func
; /**< Function for depth buffer compare */
584 GLclampd Clear
; /**< Value to clear depth buffer to */
585 GLboolean Test
; /**< Depth buffering enabled flag */
586 GLboolean Mask
; /**< Depth buffer writable? */
587 GLboolean BoundsTest
; /**< GL_EXT_depth_bounds_test */
588 GLfloat BoundsMin
, BoundsMax
;/**< GL_EXT_depth_bounds_test */
593 * glEnable()/glDisable() attribute group (GL_ENABLE_BIT).
595 struct gl_enable_attrib
598 GLboolean AutoNormal
;
600 GLbitfield ClipPlanes
;
601 GLboolean ColorMaterial
;
602 GLboolean ColorTable
; /* SGI_color_table */
603 GLboolean PostColorMatrixColorTable
; /* SGI_color_table */
604 GLboolean PostConvolutionColorTable
; /* SGI_color_table */
605 GLboolean Convolution1D
;
606 GLboolean Convolution2D
;
607 GLboolean Separable2D
;
613 GLboolean Light
[MAX_LIGHTS
];
615 GLboolean LineSmooth
;
616 GLboolean LineStipple
;
617 GLboolean IndexLogicOp
;
618 GLboolean ColorLogicOp
;
619 GLboolean Map1Color4
;
621 GLboolean Map1Normal
;
622 GLboolean Map1TextureCoord1
;
623 GLboolean Map1TextureCoord2
;
624 GLboolean Map1TextureCoord3
;
625 GLboolean Map1TextureCoord4
;
626 GLboolean Map1Vertex3
;
627 GLboolean Map1Vertex4
;
628 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
629 GLboolean Map2Color4
;
631 GLboolean Map2Normal
;
632 GLboolean Map2TextureCoord1
;
633 GLboolean Map2TextureCoord2
;
634 GLboolean Map2TextureCoord3
;
635 GLboolean Map2TextureCoord4
;
636 GLboolean Map2Vertex3
;
637 GLboolean Map2Vertex4
;
638 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
641 GLboolean PixelTexture
;
642 GLboolean PointSmooth
;
643 GLboolean PolygonOffsetPoint
;
644 GLboolean PolygonOffsetLine
;
645 GLboolean PolygonOffsetFill
;
646 GLboolean PolygonSmooth
;
647 GLboolean PolygonStipple
;
648 GLboolean RescaleNormals
;
651 GLboolean StencilTwoSide
; /* GL_EXT_stencil_two_side */
652 GLboolean MultisampleEnabled
; /* GL_ARB_multisample */
653 GLboolean SampleAlphaToCoverage
; /* GL_ARB_multisample */
654 GLboolean SampleAlphaToOne
; /* GL_ARB_multisample */
655 GLboolean SampleCoverage
; /* GL_ARB_multisample */
656 GLboolean SampleCoverageInvert
; /* GL_ARB_multisample */
657 GLboolean RasterPositionUnclipped
; /* GL_IBM_rasterpos_clip */
658 GLuint Texture
[MAX_TEXTURE_IMAGE_UNITS
];
659 GLuint TexGen
[MAX_TEXTURE_COORD_UNITS
];
660 /* SGI_texture_color_table */
661 GLboolean TextureColorTable
[MAX_TEXTURE_IMAGE_UNITS
];
662 /* GL_NV_vertex_program */
663 GLboolean VertexProgram
;
664 GLboolean VertexProgramPointSize
;
665 GLboolean VertexProgramTwoSide
;
666 /* GL_ARB_point_sprite / GL_NV_point_sprite */
667 GLboolean PointSprite
;
668 GLboolean FragmentShaderATI
;
673 * Evaluator attribute group (GL_EVAL_BIT).
675 struct gl_eval_attrib
681 GLboolean Map1Color4
;
683 GLboolean Map1Normal
;
684 GLboolean Map1TextureCoord1
;
685 GLboolean Map1TextureCoord2
;
686 GLboolean Map1TextureCoord3
;
687 GLboolean Map1TextureCoord4
;
688 GLboolean Map1Vertex3
;
689 GLboolean Map1Vertex4
;
690 GLboolean Map1Attrib
[16]; /* GL_NV_vertex_program */
691 GLboolean Map2Color4
;
693 GLboolean Map2Normal
;
694 GLboolean Map2TextureCoord1
;
695 GLboolean Map2TextureCoord2
;
696 GLboolean Map2TextureCoord3
;
697 GLboolean Map2TextureCoord4
;
698 GLboolean Map2Vertex3
;
699 GLboolean Map2Vertex4
;
700 GLboolean Map2Attrib
[16]; /* GL_NV_vertex_program */
701 GLboolean AutoNormal
;
705 * \name Map Grid endpoints and divisions and calculated du values
709 GLfloat MapGrid1u1
, MapGrid1u2
, MapGrid1du
;
710 GLint MapGrid2un
, MapGrid2vn
;
711 GLfloat MapGrid2u1
, MapGrid2u2
, MapGrid2du
;
712 GLfloat MapGrid2v1
, MapGrid2v2
, MapGrid2dv
;
718 * Fog attribute group (GL_FOG_BIT).
722 GLboolean Enabled
; /**< Fog enabled flag */
723 GLfloat Color
[4]; /**< Fog color */
724 GLfloat Density
; /**< Density >= 0.0 */
725 GLfloat Start
; /**< Start distance in eye coords */
726 GLfloat End
; /**< End distance in eye coords */
727 GLfloat Index
; /**< Fog index */
728 GLenum Mode
; /**< Fog mode */
729 GLboolean ColorSumEnabled
;
730 GLenum FogCoordinateSource
; /**< GL_EXT_fog_coord */
735 * Hint attribute group (GL_HINT_BIT).
737 * Values are always one of GL_FASTEST, GL_NICEST, or GL_DONT_CARE.
739 struct gl_hint_attrib
741 GLenum PerspectiveCorrection
;
744 GLenum PolygonSmooth
;
746 GLenum ClipVolumeClipping
; /**< GL_EXT_clip_volume_hint */
747 GLenum TextureCompression
; /**< GL_ARB_texture_compression */
748 GLenum GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
749 GLenum FragmentShaderDerivative
; /**< GL_ARB_fragment_shader */
754 * Histogram attributes.
756 struct gl_histogram_attrib
758 GLuint Width
; /**< number of table entries */
759 GLint Format
; /**< GL_ALPHA, GL_RGB, etc */
760 GLuint Count
[HISTOGRAM_TABLE_SIZE
][4]; /**< the histogram */
761 GLboolean Sink
; /**< terminate image transfer? */
762 GLubyte RedSize
; /**< Bits per counter */
766 GLubyte LuminanceSize
;
771 * Color Min/max state.
773 struct gl_minmax_attrib
777 GLfloat Min
[4], Max
[4]; /**< RGBA */
782 * Image convolution state.
784 struct gl_convolution_attrib
787 GLenum InternalFormat
;
790 GLfloat Filter
[MAX_CONVOLUTION_WIDTH
* MAX_CONVOLUTION_HEIGHT
* 4];
798 #define LIGHT_SPOT 0x1
799 #define LIGHT_LOCAL_VIEWER 0x2
800 #define LIGHT_POSITIONAL 0x4
801 #define LIGHT_NEED_VERTICES (LIGHT_POSITIONAL|LIGHT_LOCAL_VIEWER)
806 * Lighting attribute group (GL_LIGHT_BIT).
808 struct gl_light_attrib
810 struct gl_light Light
[MAX_LIGHTS
]; /**< Array of light sources */
811 struct gl_lightmodel Model
; /**< Lighting model */
814 * Must flush FLUSH_VERTICES before referencing:
817 struct gl_material Material
; /**< Includes front & back values */
820 GLboolean Enabled
; /**< Lighting enabled flag */
821 GLenum ShadeModel
; /**< GL_FLAT or GL_SMOOTH */
822 GLenum ColorMaterialFace
; /**< GL_FRONT, BACK or FRONT_AND_BACK */
823 GLenum ColorMaterialMode
; /**< GL_AMBIENT, GL_DIFFUSE, etc */
824 GLbitfield ColorMaterialBitmask
; /**< bitmask formed from Face and Mode */
825 GLboolean ColorMaterialEnabled
;
827 struct gl_light EnabledList
; /**< List sentinel */
830 * Derived state for optimizations:
833 GLboolean _NeedEyeCoords
;
834 GLboolean _NeedVertices
; /**< Use fast shader? */
835 GLbitfield _Flags
; /**< LIGHT_* flags, see above */
836 GLfloat _BaseColor
[2][3];
842 * Line attribute group (GL_LINE_BIT).
844 struct gl_line_attrib
846 GLboolean SmoothFlag
; /**< GL_LINE_SMOOTH enabled? */
847 GLboolean StippleFlag
; /**< GL_LINE_STIPPLE enabled? */
848 GLushort StipplePattern
; /**< Stipple pattern */
849 GLint StippleFactor
; /**< Stipple repeat factor */
850 GLfloat Width
; /**< Line width */
851 GLfloat _Width
; /**< Clamped Line width */
856 * Display list attribute group (GL_LIST_BIT).
858 struct gl_list_attrib
865 * Used by device drivers to hook new commands into display lists.
867 struct gl_list_instruction
870 void (*Execute
)( GLcontext
*ctx
, void *data
);
871 void (*Destroy
)( GLcontext
*ctx
, void *data
);
872 void (*Print
)( GLcontext
*ctx
, void *data
);
875 #define MAX_DLIST_EXT_OPCODES 16
878 * Used by device drivers to hook new commands into display lists.
880 struct gl_list_extensions
882 struct gl_list_instruction Opcode
[MAX_DLIST_EXT_OPCODES
];
888 * Multisample attribute group (GL_MULTISAMPLE_BIT).
890 struct gl_multisample_attrib
893 GLboolean SampleAlphaToCoverage
;
894 GLboolean SampleAlphaToOne
;
895 GLboolean SampleCoverage
;
896 GLfloat SampleCoverageValue
;
897 GLboolean SampleCoverageInvert
;
902 * Pixel attribute group (GL_PIXEL_MODE_BIT).
904 struct gl_pixel_attrib
906 GLenum ReadBuffer
; /**< source buffer for glRead/CopyPixels() */
907 GLfloat RedBias
, RedScale
;
908 GLfloat GreenBias
, GreenScale
;
909 GLfloat BlueBias
, BlueScale
;
910 GLfloat AlphaBias
, AlphaScale
;
911 GLfloat DepthBias
, DepthScale
;
912 GLint IndexShift
, IndexOffset
;
913 GLboolean MapColorFlag
;
914 GLboolean MapStencilFlag
;
915 GLfloat ZoomX
, ZoomY
;
916 /* XXX move these out of gl_pixel_attrib */
917 GLint MapStoSsize
; /**< Size of each pixel map */
927 GLint MapStoS
[MAX_PIXEL_MAP_TABLE
]; /**< Pixel map tables */
928 GLfloat MapItoI
[MAX_PIXEL_MAP_TABLE
];
929 GLfloat MapItoR
[MAX_PIXEL_MAP_TABLE
];
930 GLfloat MapItoG
[MAX_PIXEL_MAP_TABLE
];
931 GLfloat MapItoB
[MAX_PIXEL_MAP_TABLE
];
932 GLfloat MapItoA
[MAX_PIXEL_MAP_TABLE
];
933 GLubyte MapItoR8
[MAX_PIXEL_MAP_TABLE
]; /**< converted to 8-bit color */
934 GLubyte MapItoG8
[MAX_PIXEL_MAP_TABLE
];
935 GLubyte MapItoB8
[MAX_PIXEL_MAP_TABLE
];
936 GLubyte MapItoA8
[MAX_PIXEL_MAP_TABLE
];
937 GLfloat MapRtoR
[MAX_PIXEL_MAP_TABLE
];
938 GLfloat MapGtoG
[MAX_PIXEL_MAP_TABLE
];
939 GLfloat MapBtoB
[MAX_PIXEL_MAP_TABLE
];
940 GLfloat MapAtoA
[MAX_PIXEL_MAP_TABLE
];
941 /** GL_EXT_histogram */
942 GLboolean HistogramEnabled
;
943 GLboolean MinMaxEnabled
;
944 /** GL_SGI_color_matrix */
945 GLfloat PostColorMatrixScale
[4]; /**< RGBA */
946 GLfloat PostColorMatrixBias
[4]; /**< RGBA */
947 /** GL_SGI_color_table */
948 GLfloat ColorTableScale
[4];
949 GLfloat ColorTableBias
[4];
950 GLboolean ColorTableEnabled
;
951 GLfloat PCCTscale
[4];
953 GLboolean PostConvolutionColorTableEnabled
;
954 GLfloat PCMCTscale
[4];
955 GLfloat PCMCTbias
[4];
956 GLboolean PostColorMatrixColorTableEnabled
;
957 /** GL_SGI_texture_color_table */
958 GLfloat TextureColorTableScale
[4];
959 GLfloat TextureColorTableBias
[4];
961 GLboolean Convolution1DEnabled
;
962 GLboolean Convolution2DEnabled
;
963 GLboolean Separable2DEnabled
;
964 GLfloat ConvolutionBorderColor
[3][4];
965 GLenum ConvolutionBorderMode
[3];
966 GLfloat ConvolutionFilterScale
[3][4];
967 GLfloat ConvolutionFilterBias
[3][4];
968 GLfloat PostConvolutionScale
[4]; /**< RGBA */
969 GLfloat PostConvolutionBias
[4]; /**< RGBA */
974 * Point attribute group (GL_POINT_BIT).
976 struct gl_point_attrib
978 GLboolean SmoothFlag
; /**< True if GL_POINT_SMOOTH is enabled */
979 GLfloat Size
; /**< User-specified point size */
980 GLfloat _Size
; /**< Size clamped to Const.Min/MaxPointSize */
981 GLfloat Params
[3]; /**< GL_EXT_point_parameters */
982 GLfloat MinSize
, MaxSize
; /**< GL_EXT_point_parameters */
983 GLfloat Threshold
; /**< GL_EXT_point_parameters */
984 GLboolean _Attenuated
; /**< True if Params != [1, 0, 0] */
985 GLboolean PointSprite
; /**< GL_NV_point_sprite / GL_NV_point_sprite */
986 GLboolean CoordReplace
[MAX_TEXTURE_UNITS
]; /**< GL_NV/ARB_point_sprite */
987 GLenum SpriteRMode
; /**< GL_NV_point_sprite (only!) */
988 GLenum SpriteOrigin
; /**< GL_ARB_point_sprite */
993 * Polygon attribute group (GL_POLYGON_BIT).
995 struct gl_polygon_attrib
997 GLenum FrontFace
; /**< Either GL_CW or GL_CCW */
998 GLenum FrontMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
999 GLenum BackMode
; /**< Either GL_POINT, GL_LINE or GL_FILL */
1000 GLboolean _FrontBit
; /**< 0=GL_CCW, 1=GL_CW */
1001 GLboolean CullFlag
; /**< Culling on/off flag */
1002 GLboolean SmoothFlag
; /**< True if GL_POLYGON_SMOOTH is enabled */
1003 GLboolean StippleFlag
; /**< True if GL_POLYGON_STIPPLE is enabled */
1004 GLenum CullFaceMode
; /**< Culling mode GL_FRONT or GL_BACK */
1005 GLfloat OffsetFactor
; /**< Polygon offset factor, from user */
1006 GLfloat OffsetUnits
; /**< Polygon offset units, from user */
1007 GLboolean OffsetPoint
; /**< Offset in GL_POINT mode */
1008 GLboolean OffsetLine
; /**< Offset in GL_LINE mode */
1009 GLboolean OffsetFill
; /**< Offset in GL_FILL mode */
1014 * Scissor attributes (GL_SCISSOR_BIT).
1016 struct gl_scissor_attrib
1018 GLboolean Enabled
; /**< Scissor test enabled? */
1019 GLint X
, Y
; /**< Lower left corner of box */
1020 GLsizei Width
, Height
; /**< Size of box */
1025 * Stencil attribute group (GL_STENCIL_BUFFER_BIT).
1027 struct gl_stencil_attrib
1029 GLboolean Enabled
; /**< Enabled flag */
1030 GLboolean TestTwoSide
; /**< GL_EXT_stencil_two_side */
1031 GLubyte ActiveFace
; /**< GL_EXT_stencil_two_side (0 or 1) */
1032 GLboolean _TestTwoSide
;
1033 GLenum Function
[2]; /**< Stencil function */
1034 GLenum FailFunc
[2]; /**< Fail function */
1035 GLenum ZPassFunc
[2]; /**< Depth buffer pass function */
1036 GLenum ZFailFunc
[2]; /**< Depth buffer fail function */
1037 GLint Ref
[2]; /**< Reference value */
1038 GLuint ValueMask
[2]; /**< Value mask */
1039 GLuint WriteMask
[2]; /**< Write mask */
1040 GLuint Clear
; /**< Clear value */
1044 #define NUM_TEXTURE_TARGETS 5 /* 1D, 2D, 3D, CUBE and RECT */
1047 * An index for each type of texture object
1050 #define TEXTURE_1D_INDEX 0
1051 #define TEXTURE_2D_INDEX 1
1052 #define TEXTURE_3D_INDEX 2
1053 #define TEXTURE_CUBE_INDEX 3
1054 #define TEXTURE_RECT_INDEX 4
1058 * Bit flags for each type of texture object
1059 * Used for Texture.Unit[]._ReallyEnabled flags.
1062 #define TEXTURE_1D_BIT (1 << TEXTURE_1D_INDEX)
1063 #define TEXTURE_2D_BIT (1 << TEXTURE_2D_INDEX)
1064 #define TEXTURE_3D_BIT (1 << TEXTURE_3D_INDEX)
1065 #define TEXTURE_CUBE_BIT (1 << TEXTURE_CUBE_INDEX)
1066 #define TEXTURE_RECT_BIT (1 << TEXTURE_RECT_INDEX)
1071 * TexGenEnabled flags.
1082 * Bit flag versions of the corresponding GL_ constants.
1085 #define TEXGEN_SPHERE_MAP 0x1
1086 #define TEXGEN_OBJ_LINEAR 0x2
1087 #define TEXGEN_EYE_LINEAR 0x4
1088 #define TEXGEN_REFLECTION_MAP_NV 0x8
1089 #define TEXGEN_NORMAL_MAP_NV 0x10
1091 #define TEXGEN_NEED_NORMALS (TEXGEN_SPHERE_MAP | \
1092 TEXGEN_REFLECTION_MAP_NV | \
1093 TEXGEN_NORMAL_MAP_NV)
1094 #define TEXGEN_NEED_EYE_COORD (TEXGEN_SPHERE_MAP | \
1095 TEXGEN_REFLECTION_MAP_NV | \
1096 TEXGEN_NORMAL_MAP_NV | \
1101 /* A selection of state flags to make driver and module's lives easier. */
1102 #define ENABLE_TEXGEN0 0x1
1103 #define ENABLE_TEXGEN1 0x2
1104 #define ENABLE_TEXGEN2 0x4
1105 #define ENABLE_TEXGEN3 0x8
1106 #define ENABLE_TEXGEN4 0x10
1107 #define ENABLE_TEXGEN5 0x20
1108 #define ENABLE_TEXGEN6 0x40
1109 #define ENABLE_TEXGEN7 0x80
1111 #define ENABLE_TEXMAT0 0x1 /* Ie. not the identity matrix */
1112 #define ENABLE_TEXMAT1 0x2
1113 #define ENABLE_TEXMAT2 0x4
1114 #define ENABLE_TEXMAT3 0x8
1115 #define ENABLE_TEXMAT4 0x10
1116 #define ENABLE_TEXMAT5 0x20
1117 #define ENABLE_TEXMAT6 0x40
1118 #define ENABLE_TEXMAT7 0x80
1120 #define ENABLE_TEXGEN(i) (ENABLE_TEXGEN0 << (i))
1121 #define ENABLE_TEXMAT(i) (ENABLE_TEXMAT0 << (i))
1125 * Texel fetch function prototype. We use texel fetch functions to
1126 * extract RGBA, color indexes and depth components out of 1D, 2D and 3D
1127 * texture images. These functions help to isolate us from the gritty
1128 * details of all the various texture image encodings.
1130 * \param texImage texture image.
1131 * \param col texel column.
1132 * \param row texel row.
1133 * \param img texel image level/layer.
1134 * \param texelOut output texel (up to 4 GLchans)
1136 typedef void (*FetchTexelFuncC
)( const struct gl_texture_image
*texImage
,
1137 GLint col
, GLint row
, GLint img
,
1141 * As above, but returns floats.
1142 * Used for depth component images and for upcoming signed/float
1145 typedef void (*FetchTexelFuncF
)( const struct gl_texture_image
*texImage
,
1146 GLint col
, GLint row
, GLint img
,
1147 GLfloat
*texelOut
);
1150 typedef void (*StoreTexelFunc
)(struct gl_texture_image
*texImage
,
1151 GLint col
, GLint row
, GLint img
,
1155 * TexImage store function. This is called by the glTex[Sub]Image
1156 * functions and is responsible for converting the user-specified texture
1157 * image into a specific (hardware) image format.
1159 typedef GLboolean (*StoreTexImageFunc
)(GLcontext
*ctx
, GLuint dims
,
1160 GLenum baseInternalFormat
,
1161 const struct gl_texture_format
*dstFormat
,
1163 GLint dstXoffset
, GLint dstYoffset
, GLint dstZoffset
,
1164 GLint dstRowStride
, GLint dstImageStride
,
1165 GLint srcWidth
, GLint srcHeight
, GLint srcDepth
,
1166 GLenum srcFormat
, GLenum srcType
,
1167 const GLvoid
*srcAddr
,
1168 const struct gl_pixelstore_attrib
*srcPacking
);
1173 * Texture format record
1175 struct gl_texture_format
1177 GLint MesaFormat
; /**< One of the MESA_FORMAT_* values */
1179 GLenum BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1180 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1181 * GL_INTENSITY, GL_COLOR_INDEX or
1182 * GL_DEPTH_COMPONENT.
1184 GLenum DataType
; /**< GL_FLOAT or GL_UNSIGNED_NORMALIZED_ARB */
1185 GLubyte RedBits
; /**< Bits per texel component */
1186 GLubyte GreenBits
; /**< These are just rough approximations for */
1187 GLubyte BlueBits
; /**< compressed texture formats. */
1189 GLubyte LuminanceBits
;
1190 GLubyte IntensityBits
;
1193 GLubyte StencilBits
; /**< GL_EXT_packed_depth_stencil */
1195 GLuint TexelBytes
; /**< Bytes per texel, 0 if compressed format */
1197 StoreTexImageFunc StoreImage
;
1200 * \name Texel fetch function pointers
1203 FetchTexelFuncC FetchTexel1D
;
1204 FetchTexelFuncC FetchTexel2D
;
1205 FetchTexelFuncC FetchTexel3D
;
1206 FetchTexelFuncF FetchTexel1Df
;
1207 FetchTexelFuncF FetchTexel2Df
;
1208 FetchTexelFuncF FetchTexel3Df
;
1211 StoreTexelFunc StoreTexel
;
1216 * Texture image state. Describes the dimensions of a texture image,
1217 * the texel format and pointers to Texel Fetch functions.
1219 struct gl_texture_image
1221 GLenum _BaseFormat
; /**< Either GL_RGB, GL_RGBA, GL_ALPHA,
1222 * GL_LUMINANCE, GL_LUMINANCE_ALPHA,
1223 * GL_INTENSITY, GL_COLOR_INDEX,
1224 * GL_DEPTH_COMPONENT or GL_DEPTH_STENCIL_EXT
1225 * only. Used for choosing TexEnv arithmetic.
1227 GLint InternalFormat
; /**< Internal format as given by the user */
1228 GLuint Border
; /**< 0 or 1 */
1229 GLuint Width
; /**< = 2^WidthLog2 + 2*Border */
1230 GLuint Height
; /**< = 2^HeightLog2 + 2*Border */
1231 GLuint Depth
; /**< = 2^DepthLog2 + 2*Border */
1232 GLuint RowStride
; /**< == Width unless IsClientData and padded */
1233 GLuint Width2
; /**< = Width - 2*Border */
1234 GLuint Height2
; /**< = Height - 2*Border */
1235 GLuint Depth2
; /**< = Depth - 2*Border */
1236 GLuint WidthLog2
; /**< = log2(Width2) */
1237 GLuint HeightLog2
; /**< = log2(Height2) */
1238 GLuint DepthLog2
; /**< = log2(Depth2) */
1239 GLuint MaxLog2
; /**< = MAX(WidthLog2, HeightLog2) */
1240 GLfloat WidthScale
; /**< used for mipmap LOD computation */
1241 GLfloat HeightScale
; /**< used for mipmap LOD computation */
1242 GLfloat DepthScale
; /**< used for mipmap LOD computation */
1243 GLvoid
*Data
; /**< Image data, accessed via FetchTexel() */
1244 GLboolean IsClientData
; /**< Data owned by client? */
1245 GLboolean _IsPowerOfTwo
; /**< Are all dimensions powers of two? */
1247 const struct gl_texture_format
*TexFormat
;
1249 struct gl_texture_object
*TexObject
; /**< Pointer back to parent object */
1251 FetchTexelFuncC FetchTexelc
; /**< GLchan texel fetch function pointer */
1252 FetchTexelFuncF FetchTexelf
; /**< Float texel fetch function pointer */
1254 GLboolean IsCompressed
; /**< GL_ARB_texture_compression */
1255 GLuint CompressedSize
; /**< GL_ARB_texture_compression */
1258 * \name For device driver:
1261 void *DriverData
; /**< Arbitrary device driver data */
1267 * Indexes for cube map faces.
1270 #define FACE_POS_X 0
1271 #define FACE_NEG_X 1
1272 #define FACE_POS_Y 2
1273 #define FACE_NEG_Y 3
1274 #define FACE_POS_Z 4
1275 #define FACE_NEG_Z 5
1281 * Texture object state. Contains the array of mipmap images, border color,
1282 * wrap modes, filter modes, shadow/texcompare state, and the per-texture
1285 struct gl_texture_object
1287 _glthread_Mutex Mutex
; /**< for thread safety */
1288 GLint RefCount
; /**< reference count */
1289 GLuint Name
; /**< the user-visible texture object ID */
1290 GLenum Target
; /**< GL_TEXTURE_1D, GL_TEXTURE_2D, etc. */
1291 GLfloat Priority
; /**< in [0,1] */
1292 GLfloat BorderColor
[4]; /**< unclamped */
1293 GLchan _BorderChan
[4]; /**< clamped, as GLchan */
1294 GLenum WrapS
; /**< S-axis texture image wrap mode */
1295 GLenum WrapT
; /**< T-axis texture image wrap mode */
1296 GLenum WrapR
; /**< R-axis texture image wrap mode */
1297 GLenum MinFilter
; /**< minification filter */
1298 GLenum MagFilter
; /**< magnification filter */
1299 GLfloat MinLod
; /**< min lambda, OpenGL 1.2 */
1300 GLfloat MaxLod
; /**< max lambda, OpenGL 1.2 */
1301 GLfloat LodBias
; /**< OpenGL 1.4 */
1302 GLint BaseLevel
; /**< min mipmap level, OpenGL 1.2 */
1303 GLint MaxLevel
; /**< max mipmap level, OpenGL 1.2 */
1304 GLfloat MaxAnisotropy
; /**< GL_EXT_texture_filter_anisotropic */
1305 GLboolean CompareFlag
; /**< GL_SGIX_shadow */
1306 GLenum CompareOperator
; /**< GL_SGIX_shadow */
1307 GLfloat ShadowAmbient
; /**< GL_ARB_shadow_ambient */
1308 GLenum CompareMode
; /**< GL_ARB_shadow */
1309 GLenum CompareFunc
; /**< GL_ARB_shadow */
1310 GLenum DepthMode
; /**< GL_ARB_depth_texture */
1311 GLint _MaxLevel
; /**< actual max mipmap level (q in the spec) */
1312 GLfloat _MaxLambda
; /**< = _MaxLevel - BaseLevel (q - b in spec) */
1313 GLboolean GenerateMipmap
; /**< GL_SGIS_generate_mipmap */
1314 GLboolean Complete
; /**< Is texture object complete? */
1316 /** Actual texture images, indexed by [cube face] and [mipmap level] */
1317 struct gl_texture_image
*Image
[MAX_FACES
][MAX_TEXTURE_LEVELS
];
1319 /** GL_EXT_paletted_texture */
1320 struct gl_color_table Palette
;
1324 * \name For device driver.
1325 * Note: instead of attaching driver data to this pointer, it's preferable
1326 * to instead use this struct as a base class for your own texture object
1327 * class. Driver->NewTextureObject() can be used to implement the
1330 void *DriverData
; /**< Arbitrary device driver data */
1335 * Texture combine environment state.
1338 * If GL_NV_texture_env_combine4 is ever supported, the arrays in this
1339 * structure will need to be expanded for 4 elements.
1341 struct gl_tex_env_combine_state
1343 GLenum ModeRGB
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1344 GLenum ModeA
; /**< GL_REPLACE, GL_DECAL, GL_ADD, etc. */
1345 GLenum SourceRGB
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1346 GLenum SourceA
[3]; /**< GL_PRIMARY_COLOR, GL_TEXTURE, etc. */
1347 GLenum OperandRGB
[3]; /**< SRC_COLOR, ONE_MINUS_SRC_COLOR, etc */
1348 GLenum OperandA
[3]; /**< SRC_ALPHA, ONE_MINUS_SRC_ALPHA, etc */
1349 GLuint ScaleShiftRGB
; /**< 0, 1 or 2 */
1350 GLuint ScaleShiftA
; /**< 0, 1 or 2 */
1351 GLuint _NumArgsRGB
; /**< Number of inputs used for the combine mode. */
1352 GLuint _NumArgsA
; /**< Number of inputs used for the combine mode. */
1357 * Texture unit state. Contains enable flags, texture environment/function/
1358 * combiners, texgen state, pointers to current texture objects and
1359 * post-filter color tables.
1361 struct gl_texture_unit
1363 GLbitfield Enabled
; /**< bitmask of TEXTURE_*_BIT flags */
1364 GLbitfield _ReallyEnabled
; /**< 0 or exactly one of TEXTURE_*_BIT flags */
1366 GLenum EnvMode
; /**< GL_MODULATE, GL_DECAL, GL_BLEND, etc. */
1367 GLfloat EnvColor
[4];
1368 GLbitfield TexGenEnabled
; /**< Bitwise-OR of [STRQ]_BIT values */
1369 /** \name Tex coord generation mode
1370 * Either GL_OBJECT_LINEAR, GL_EYE_LINEAR or GL_SPHERE_MAP. */
1377 GLbitfield _GenBitS
;
1378 GLbitfield _GenBitT
;
1379 GLbitfield _GenBitR
;
1380 GLbitfield _GenBitQ
;
1381 GLbitfield _GenFlags
; /**< bitwise or of GenBit[STRQ] */
1382 GLfloat ObjectPlaneS
[4];
1383 GLfloat ObjectPlaneT
[4];
1384 GLfloat ObjectPlaneR
[4];
1385 GLfloat ObjectPlaneQ
[4];
1386 GLfloat EyePlaneS
[4];
1387 GLfloat EyePlaneT
[4];
1388 GLfloat EyePlaneR
[4];
1389 GLfloat EyePlaneQ
[4];
1390 GLfloat LodBias
; /**< for biasing mipmap levels */
1393 * \name GL_EXT_texture_env_combine
1395 struct gl_tex_env_combine_state Combine
;
1398 * Derived state based on \c EnvMode and the \c BaseFormat of the
1399 * currently enabled texture.
1401 struct gl_tex_env_combine_state _EnvMode
;
1404 * Currently enabled combiner state. This will point to either
1405 * \c Combine or \c _EnvMode.
1407 struct gl_tex_env_combine_state
*_CurrentCombine
;
1409 struct gl_texture_object
*Current1D
;
1410 struct gl_texture_object
*Current2D
;
1411 struct gl_texture_object
*Current3D
;
1412 struct gl_texture_object
*CurrentCubeMap
; /**< GL_ARB_texture_cube_map */
1413 struct gl_texture_object
*CurrentRect
; /**< GL_NV_texture_rectangle */
1415 struct gl_texture_object
*_Current
; /**< Points to really enabled tex obj */
1417 struct gl_texture_object Saved1D
; /**< only used by glPush/PopAttrib */
1418 struct gl_texture_object Saved2D
;
1419 struct gl_texture_object Saved3D
;
1420 struct gl_texture_object SavedCubeMap
;
1421 struct gl_texture_object SavedRect
;
1423 /* GL_SGI_texture_color_table */
1424 struct gl_color_table ColorTable
;
1425 struct gl_color_table ProxyColorTable
;
1426 GLboolean ColorTableEnabled
;
1429 struct texenvprog_cache
{
1433 struct texenvprog_cache
*next
;
1437 * Texture attribute group (GL_TEXTURE_BIT).
1439 struct gl_texture_attrib
1445 GLuint CurrentUnit
; /**< Active texture unit */
1446 GLbitfield _EnabledUnits
; /**< one bit set for each really-enabled unit */
1447 GLbitfield _EnabledCoordUnits
; /**< one bit per enabled coordinate unit */
1448 GLbitfield _GenFlags
; /**< for texgen */
1449 GLbitfield _TexGenEnabled
;
1450 GLbitfield _TexMatEnabled
;
1453 struct gl_texture_unit Unit
[MAX_TEXTURE_UNITS
];
1455 struct gl_texture_object
*Proxy1D
;
1456 struct gl_texture_object
*Proxy2D
;
1457 struct gl_texture_object
*Proxy3D
;
1458 struct gl_texture_object
*ProxyCubeMap
;
1459 struct gl_texture_object
*ProxyRect
;
1461 /** GL_EXT_shared_texture_palette */
1462 GLboolean SharedPalette
;
1463 struct gl_color_table Palette
;
1465 /** Cached texenv fragment programs */
1466 struct texenvprog_cache
*env_fp_cache
;
1471 * Transformation attribute group (GL_TRANSFORM_BIT).
1473 struct gl_transform_attrib
1475 GLenum MatrixMode
; /**< Matrix mode */
1476 GLfloat EyeUserPlane
[MAX_CLIP_PLANES
][4]; /**< User clip planes */
1477 GLfloat _ClipUserPlane
[MAX_CLIP_PLANES
][4]; /**< derived */
1478 GLbitfield ClipPlanesEnabled
; /**< on/off bitmask */
1479 GLboolean Normalize
; /**< Normalize all normals? */
1480 GLboolean RescaleNormals
; /**< GL_EXT_rescale_normal */
1481 GLboolean RasterPositionUnclipped
; /**< GL_IBM_rasterpos_clip */
1483 GLboolean CullVertexFlag
; /**< True if GL_CULL_VERTEX_EXT is enabled */
1484 GLfloat CullEyePos
[4];
1485 GLfloat CullObjPos
[4];
1490 * Viewport attribute group (GL_VIEWPORT_BIT).
1492 struct gl_viewport_attrib
1494 GLint X
, Y
; /**< position */
1495 GLsizei Width
, Height
; /**< size */
1496 GLfloat Near
, Far
; /**< Depth buffer range */
1497 GLmatrix _WindowMap
; /**< Mapping transformation as a matrix. */
1502 * Node for the attribute stack.
1504 struct gl_attrib_node
1508 struct gl_attrib_node
*next
;
1513 * GL_ARB_vertex/pixel_buffer_object buffer object
1515 struct gl_buffer_object
1521 GLvoid
*Pointer
; /**< Only valid while buffer is mapped */
1522 GLsizeiptrARB Size
; /**< Size of storage in bytes */
1523 GLubyte
*Data
; /**< Location of storage either in RAM or VRAM. */
1524 GLboolean OnCard
; /**< Is buffer in VRAM? (hardware drivers) */
1530 * Client pixel packing/unpacking attributes
1532 struct gl_pixelstore_attrib
1538 GLint ImageHeight
; /**< for GL_EXT_texture3D */
1539 GLint SkipImages
; /**< for GL_EXT_texture3D */
1540 GLboolean SwapBytes
;
1542 GLboolean ClientStorage
; /**< GL_APPLE_client_storage */
1543 GLboolean Invert
; /**< GL_MESA_pack_invert */
1544 struct gl_buffer_object
*BufferObj
; /**< GL_ARB_pixel_buffer_object */
1548 #define CA_CLIENT_DATA 0x1 /**< Data not allocated by mesa */
1552 * Client vertex array attributes
1554 struct gl_client_array
1556 GLint Size
; /**< components per element (1,2,3,4) */
1557 GLenum Type
; /**< datatype: GL_FLOAT, GL_INT, etc */
1558 GLsizei Stride
; /**< user-specified stride */
1559 GLsizei StrideB
; /**< actual stride in bytes */
1560 const GLubyte
*Ptr
; /**< Points to array data */
1561 GLbitfield Enabled
; /**< one of the _NEW_ARRAY_ bits */
1562 GLboolean Normalized
; /**< GL_ARB_vertex_program */
1564 /**< GL_ARB_vertex_buffer_object */
1565 struct gl_buffer_object
*BufferObj
;
1573 * Vertex array state
1575 struct gl_array_attrib
1577 struct gl_client_array Vertex
; /**< client data descriptors */
1578 struct gl_client_array Normal
;
1579 struct gl_client_array Color
;
1580 struct gl_client_array SecondaryColor
;
1581 struct gl_client_array FogCoord
;
1582 struct gl_client_array Index
;
1583 struct gl_client_array TexCoord
[MAX_TEXTURE_COORD_UNITS
];
1584 struct gl_client_array EdgeFlag
;
1586 struct gl_client_array VertexAttrib
[VERT_ATTRIB_MAX
]; /**< GL_NV_vertex_program */
1588 GLint ActiveTexture
; /**< Client Active Texture */
1589 GLuint LockFirst
; /**< GL_EXT_compiled_vertex_array */
1590 GLuint LockCount
; /**< GL_EXT_compiled_vertex_array */
1592 GLbitfield _Enabled
; /**< _NEW_ARRAY_* - bit set if array enabled */
1593 GLbitfield NewState
; /**< _NEW_ARRAY_* */
1595 #if FEATURE_ARB_vertex_buffer_object
1596 struct gl_buffer_object
*NullBufferObj
;
1597 struct gl_buffer_object
*ArrayBufferObj
;
1598 struct gl_buffer_object
*ElementArrayBufferObj
;
1600 GLuint _MaxElement
; /* Min of all enabled array's maxes */
1605 * Feedback buffer state
1610 GLbitfield _Mask
; /* FB_* bits */
1618 * Selection buffer state
1622 GLuint
*Buffer
; /**< selection buffer */
1623 GLuint BufferSize
; /**< size of the selection buffer */
1624 GLuint BufferCount
; /**< number of values in the selection buffer */
1625 GLuint Hits
; /**< number of records in the selection buffer */
1626 GLuint NameStackDepth
; /**< name stack depth */
1627 GLuint NameStack
[MAX_NAME_STACK_DEPTH
]; /**< name stack */
1628 GLboolean HitFlag
; /**< hit flag */
1629 GLfloat HitMinZ
; /**< minimum hit depth */
1630 GLfloat HitMaxZ
; /**< maximum hit depth */
1635 * 1-D Evaluator control points
1639 GLuint Order
; /**< Number of control points */
1640 GLfloat u1
, u2
, du
; /**< u1, u2, 1.0/(u2-u1) */
1641 GLfloat
*Points
; /**< Points to contiguous control points */
1646 * 2-D Evaluator control points
1650 GLuint Uorder
; /**< Number of control points in U dimension */
1651 GLuint Vorder
; /**< Number of control points in V dimension */
1654 GLfloat
*Points
; /**< Points to contiguous control points */
1659 * All evaluator control point state
1661 struct gl_evaluators
1667 struct gl_1d_map Map1Vertex3
;
1668 struct gl_1d_map Map1Vertex4
;
1669 struct gl_1d_map Map1Index
;
1670 struct gl_1d_map Map1Color4
;
1671 struct gl_1d_map Map1Normal
;
1672 struct gl_1d_map Map1Texture1
;
1673 struct gl_1d_map Map1Texture2
;
1674 struct gl_1d_map Map1Texture3
;
1675 struct gl_1d_map Map1Texture4
;
1676 struct gl_1d_map Map1Attrib
[16]; /**< GL_NV_vertex_program */
1683 struct gl_2d_map Map2Vertex3
;
1684 struct gl_2d_map Map2Vertex4
;
1685 struct gl_2d_map Map2Index
;
1686 struct gl_2d_map Map2Color4
;
1687 struct gl_2d_map Map2Normal
;
1688 struct gl_2d_map Map2Texture1
;
1689 struct gl_2d_map Map2Texture2
;
1690 struct gl_2d_map Map2Texture3
;
1691 struct gl_2d_map Map2Texture4
;
1692 struct gl_2d_map Map2Attrib
[16]; /**< GL_NV_vertex_program */
1698 * State used during execution of fragment programs.
1702 GLfloat Temporaries
[MAX_NV_FRAGMENT_PROGRAM_TEMPS
][4];
1703 GLfloat Inputs
[MAX_NV_FRAGMENT_PROGRAM_INPUTS
][4];
1704 GLfloat Outputs
[MAX_NV_FRAGMENT_PROGRAM_OUTPUTS
][4];
1705 GLuint CondCodes
[4];
1710 * Names of the various vertex/fragment program register files, etc.
1711 * NOTE: first four tokens must fit into 2 bits (see t_vb_arbprogram.c)
1712 * All values should fit in a 4-bit field.
1716 PROGRAM_TEMPORARY
= 0,
1717 PROGRAM_LOCAL_PARAM
= 1,
1718 PROGRAM_ENV_PARAM
= 2,
1719 PROGRAM_STATE_VAR
= 3,
1722 PROGRAM_NAMED_PARAM
= 6,
1723 PROGRAM_CONSTANT
= 7,
1724 PROGRAM_WRITE_ONLY
= 8,
1725 PROGRAM_ADDRESS
= 9,
1726 PROGRAM_UNDEFINED
= 15 /* invalid value */
1730 /** Vertex and fragment instructions */
1731 struct prog_instruction
;
1732 struct program_parameter_list
;
1736 * Base class for any kind of program object
1741 GLubyte
*String
; /**< Null-terminated program text */
1744 GLenum Format
; /**< String encoding format */
1747 struct prog_instruction
*Instructions
;
1749 GLbitfield InputsRead
; /* Bitmask of which input regs are read */
1750 GLbitfield OutputsWritten
; /* Bitmask of which output regs are written to */
1752 /** Named parameters, constants, etc. from program text */
1753 struct program_parameter_list
*Parameters
;
1754 /** Numbered local parameters */
1755 GLfloat LocalParams
[MAX_PROGRAM_LOCAL_PARAMS
][4];
1757 /** Logical counts */
1759 GLuint NumInstructions
;
1760 GLuint NumTemporaries
;
1761 GLuint NumParameters
;
1762 GLuint NumAttributes
;
1763 GLuint NumAddressRegs
;
1765 /** Native, actual h/w counts */
1767 GLuint NumNativeInstructions
;
1768 GLuint NumNativeTemporaries
;
1769 GLuint NumNativeParameters
;
1770 GLuint NumNativeAttributes
;
1771 GLuint NumNativeAddressRegs
;
1776 /** Vertex program object */
1777 struct vertex_program
1779 struct program Base
; /* base class */
1780 GLboolean IsNVProgram
; /* GL_NV_vertex_program ? */
1781 GLboolean IsPositionInvariant
; /* GL_NV_vertex_program1_1 */
1782 void *TnlData
; /* should probably use Base.DriverData */
1786 /** Fragment program object */
1787 struct fragment_program
1789 struct program Base
; /**< base class */
1790 GLbitfield TexturesUsed
[MAX_TEXTURE_IMAGE_UNITS
]; /**< TEXTURE_x_BIT bitmask */
1791 GLuint NumAluInstructions
; /**< GL_ARB_fragment_program */
1792 GLuint NumTexInstructions
;
1793 GLuint NumTexIndirections
;
1794 GLuint NumNativeAluInstructions
; /**< GL_ARB_fragment_program */
1795 GLuint NumNativeTexInstructions
;
1796 GLuint NumNativeTexIndirections
;
1803 * State common to vertex and fragment programs.
1805 struct gl_program_state
1807 GLint ErrorPos
; /* GL_PROGRAM_ERROR_POSITION_NV */
1808 const char *ErrorString
; /* GL_PROGRAM_ERROR_STRING_NV */
1813 * State vars for GL_ARB/GL_NV_vertex_program
1815 struct gl_vertex_program_state
1817 GLboolean Enabled
; /**< GL_VERTEX_PROGRAM_NV */
1818 GLboolean _Enabled
; /**< Enabled and valid program? */
1819 GLboolean PointSizeEnabled
; /**< GL_VERTEX_PROGRAM_POINT_SIZE_NV */
1820 GLboolean TwoSideEnabled
; /**< GL_VERTEX_PROGRAM_TWO_SIDE_NV */
1821 struct vertex_program
*Current
; /**< ptr to currently bound program */
1822 struct vertex_program
*_Current
; /**< ptr to currently bound
1823 program, including internal
1824 (t_vp_build.c) programs */
1826 GLenum TrackMatrix
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1827 GLenum TrackMatrixTransform
[MAX_NV_VERTEX_PROGRAM_PARAMS
/ 4];
1829 GLfloat Parameters
[MAX_NV_VERTEX_PROGRAM_PARAMS
][4]; /* Env params */
1830 /* Only used during program execution (may be moved someday): */
1831 GLfloat Temporaries
[MAX_NV_VERTEX_PROGRAM_TEMPS
][4];
1832 GLfloat Inputs
[MAX_NV_VERTEX_PROGRAM_INPUTS
][4];
1833 GLuint InputsSize
[MAX_NV_VERTEX_PROGRAM_INPUTS
];
1834 GLfloat Outputs
[MAX_NV_VERTEX_PROGRAM_OUTPUTS
][4];
1835 GLint AddressReg
[4];
1837 #if FEATURE_MESA_program_debug
1838 GLprogramcallbackMESA Callback
;
1839 GLvoid
*CallbackData
;
1840 GLboolean CallbackEnabled
;
1841 GLuint CurrentPosition
;
1847 * Context state for GL_ARB/NV_fragment_program
1849 struct gl_fragment_program_state
1851 GLboolean Enabled
; /* GL_VERTEX_PROGRAM_NV */
1852 GLboolean _Enabled
; /* Enabled and valid program? */
1854 struct fragment_program
*Current
; /* ptr to currently bound program */
1855 struct fragment_program
*_Current
; /* ptr to currently active program
1856 (including internal programs) */
1857 struct fp_machine Machine
; /* machine state */
1858 GLfloat Parameters
[MAX_NV_FRAGMENT_PROGRAM_PARAMS
][4]; /* Env params */
1860 #if FEATURE_MESA_program_debug
1861 GLprogramcallbackMESA Callback
;
1862 GLvoid
*CallbackData
;
1863 GLboolean CallbackEnabled
;
1864 GLuint CurrentPosition
;
1870 * ATI_fragment_shader runtime state
1872 #define ATI_FS_INPUT_PRIMARY 0
1873 #define ATI_FS_INPUT_SECONDARY 1
1875 struct atifs_instruction
;
1876 struct atifs_setupinst
;
1879 * State for executing ATI fragment shader.
1881 struct atifs_machine
1883 GLfloat Registers
[6][4]; /** six temporary registers */
1884 GLfloat PrevPassRegisters
[6][4];
1885 GLfloat Inputs
[2][4]; /** Primary, secondary input colors */
1890 * ATI fragment shader
1892 struct ati_fragment_shader
1896 struct atifs_instruction
*Instructions
[2];
1897 struct atifs_setupinst
*SetupInst
[2];
1898 GLfloat Constants
[8][4];
1899 GLbitfield LocalConstDef
; /** Indicates which constants have been set */
1900 GLubyte numArithInstr
[2];
1901 GLubyte regsAssigned
[2];
1902 GLubyte NumPasses
; /** 1 or 2 */
1904 GLubyte last_optype
;
1905 GLboolean interpinp1
;
1911 * Context state for GL_ATI_fragment_shader
1913 struct gl_ati_fragment_shader_state
1916 GLboolean _Enabled
; /** enabled and valid shader? */
1917 GLboolean Compiling
;
1918 GLfloat GlobalConstants
[8][4];
1919 struct atifs_machine Machine
; /* machine state */
1920 struct ati_fragment_shader
*Current
;
1925 * Occlusion/timer query object.
1927 struct gl_query_object
1930 GLuint64EXT Result
; /* the counter */
1931 GLboolean Active
; /* inside Begin/EndQuery */
1932 GLboolean Ready
; /* result is ready */
1937 * Context state for query objects.
1939 struct gl_query_state
1941 struct _mesa_HashTable
*QueryObjects
;
1942 struct gl_query_object
*CurrentOcclusionObject
; /* GL_ARB_occlusion_query */
1943 struct gl_query_object
*CurrentTimerObject
; /* GL_EXT_timer_query */
1948 * Context state for vertex/fragment shaders.
1950 struct gl_shader_objects_state
1952 struct gl2_program_intf
**current_program
;
1957 * State which can be shared by multiple contexts:
1959 struct gl_shared_state
1961 _glthread_Mutex Mutex
; /**< for thread safety */
1962 GLint RefCount
; /**< Reference count */
1963 struct _mesa_HashTable
*DisplayList
; /**< Display lists hash table */
1964 struct _mesa_HashTable
*TexObjects
; /**< Texture objects hash table */
1967 * \name Default texture objects (shared by all multi-texture units)
1970 struct gl_texture_object
*Default1D
;
1971 struct gl_texture_object
*Default2D
;
1972 struct gl_texture_object
*Default3D
;
1973 struct gl_texture_object
*DefaultCubeMap
;
1974 struct gl_texture_object
*DefaultRect
;
1978 * \name Vertex/fragment programs
1981 struct _mesa_HashTable
*Programs
; /**< All vertex/fragment programs */
1982 #if FEATURE_ARB_vertex_program
1983 struct program
*DefaultVertexProgram
;
1985 #if FEATURE_ARB_fragment_program
1986 struct program
*DefaultFragmentProgram
;
1990 #if FEATURE_ATI_fragment_shader
1991 struct _mesa_HashTable
*ATIShaders
;
1992 struct ati_fragment_shader
*DefaultFragmentShader
;
1995 #if FEATURE_ARB_vertex_buffer_object || FEATURE_ARB_pixel_buffer_object
1996 struct _mesa_HashTable
*BufferObjects
;
1999 struct _mesa_HashTable
*GL2Objects
;
2001 #if FEATURE_EXT_framebuffer_object
2002 struct _mesa_HashTable
*RenderBuffers
;
2003 struct _mesa_HashTable
*FrameBuffers
;
2006 void *DriverData
; /**< Device driver shared state */
2013 * A renderbuffer stores colors or depth values or stencil values.
2014 * A framebuffer object will have a collection of these.
2015 * Data are read/written to the buffer with a handful of Get/Put functions.
2017 * Instances of this object are allocated with the Driver's NewRenderbuffer
2018 * hook. Drivers will likely wrap this class inside a driver-specific
2019 * class to simulate inheritance.
2021 struct gl_renderbuffer
2025 GLuint Width
, Height
;
2026 GLenum InternalFormat
; /* The user-specified value */
2027 GLenum _BaseFormat
; /* Either GL_RGB, GL_RGBA, GL_DEPTH_COMPONENT or */
2028 /* GL_STENCIL_INDEX. */
2029 GLenum DataType
; /* Type of values passed to the Get/Put functions */
2030 GLubyte RedBits
; /**< Bits per image component */
2036 GLubyte StencilBits
;
2039 /* Used to wrap one renderbuffer around another: */
2040 struct gl_renderbuffer
*Wrapped
;
2042 /* Delete this renderbuffer */
2043 void (*Delete
)(struct gl_renderbuffer
*rb
);
2045 /* Allocate new storage for this renderbuffer */
2046 GLboolean (*AllocStorage
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2047 GLenum internalFormat
,
2048 GLuint width
, GLuint height
);
2050 /* Lock/Unlock are called before/after calling the Get/Put functions.
2051 * Not sure this is the right place for these yet.
2052 void (*Lock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2053 void (*Unlock)(GLcontext *ctx, struct gl_renderbuffer *rb);
2056 /* Return a pointer to the element/pixel at (x,y).
2057 * Should return NULL if the buffer memory can't be directly addressed.
2059 void *(*GetPointer
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2062 /* Get/Read a row of values.
2063 * The values will be of format _BaseFormat and type DataType.
2065 void (*GetRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2066 GLint x
, GLint y
, void *values
);
2068 /* Get/Read values at arbitrary locations.
2069 * The values will be of format _BaseFormat and type DataType.
2071 void (*GetValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2072 const GLint x
[], const GLint y
[], void *values
);
2074 /* Put/Write a row of values.
2075 * The values will be of format _BaseFormat and type DataType.
2077 void (*PutRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2078 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2080 /* Put/Write a row of RGB values. This is a special-case routine that's
2081 * only used for RGBA renderbuffers when the source data is GL_RGB. That's
2082 * a common case for glDrawPixels and some triangle routines.
2083 * The values will be of format GL_RGB and type DataType.
2085 void (*PutRowRGB
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2086 GLint x
, GLint y
, const void *values
, const GLubyte
*mask
);
2089 /* Put/Write a row of identical values.
2090 * The values will be of format _BaseFormat and type DataType.
2092 void (*PutMonoRow
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2093 GLint x
, GLint y
, const void *value
, const GLubyte
*mask
);
2095 /* Put/Write values at arbitrary locations.
2096 * The values will be of format _BaseFormat and type DataType.
2098 void (*PutValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
, GLuint count
,
2099 const GLint x
[], const GLint y
[], const void *values
,
2100 const GLubyte
*mask
);
2101 /* Put/Write identical values at arbitrary locations.
2102 * The values will be of format _BaseFormat and type DataType.
2104 void (*PutMonoValues
)(GLcontext
*ctx
, struct gl_renderbuffer
*rb
,
2105 GLuint count
, const GLint x
[], const GLint y
[],
2106 const void *value
, const GLubyte
*mask
);
2111 * A renderbuffer attachment point points to either a texture object
2112 * (and specifies a mipmap level, cube face or 3D texture slice) or
2113 * points to a renderbuffer.
2115 struct gl_renderbuffer_attachment
2117 GLenum Type
; /* GL_NONE or GL_TEXTURE or GL_RENDERBUFFER_EXT */
2120 /* IF Type == GL_RENDERBUFFER_EXT: */
2121 struct gl_renderbuffer
*Renderbuffer
;
2123 /* IF Type == GL_TEXTURE: */
2124 struct gl_texture_object
*Texture
;
2125 GLuint TextureLevel
;
2126 GLuint CubeMapFace
; /* 0 .. 5, for cube map textures */
2127 GLuint Zoffset
; /* for 3D textures */
2132 * A framebuffer is a collection of renderbuffers (color, depth, stencil, etc).
2133 * In C++ terms, think of this as a base class from which device drivers
2134 * will make derived classes.
2136 struct gl_framebuffer
2138 GLuint Name
; /* if zero, this is a window system framebuffer */
2141 GLvisual Visual
; /**< The corresponding visual */
2143 GLboolean Initialized
;
2145 GLuint Width
, Height
; /**< size of frame buffer in pixels */
2147 /** \name Drawing bounds (Intersection of buffer size and scissor box) */
2149 GLint _Xmin
, _Xmax
; /**< inclusive */
2150 GLint _Ymin
, _Ymax
; /**< exclusive */
2153 /** \name Derived Z buffer stuff */
2155 GLuint _DepthMax
; /**< Max depth buffer value */
2156 GLfloat _DepthMaxF
; /**< Float max depth buffer value */
2157 GLfloat _MRD
; /**< minimum resolvable difference in Z values */
2160 GLenum _Status
; /* One of the GL_FRAMEBUFFER_(IN)COMPLETE_* tokens */
2162 /* Array of all renderbuffer attachments, indexed by BUFFER_* tokens. */
2163 struct gl_renderbuffer_attachment Attachment
[BUFFER_COUNT
];
2165 /* In unextended OpenGL these vars are part of the GL_COLOR_BUFFER
2166 * attribute group and GL_PIXEL attribute group, respectively.
2168 GLenum ColorDrawBuffer
[MAX_DRAW_BUFFERS
];
2169 GLenum ColorReadBuffer
;
2171 /* These are computed from ColorDrawBuffer and ColorReadBuffer */
2172 GLbitfield _ColorDrawBufferMask
[MAX_DRAW_BUFFERS
]; /* Mask of BUFFER_BIT_* flags */
2173 GLint _ColorReadBufferIndex
; /* -1 = None */
2175 /* These are computed from _ColorDrawBufferMask and _ColorReadBufferIndex */
2176 GLuint _NumColorDrawBuffers
[MAX_DRAW_BUFFERS
];
2177 struct gl_renderbuffer
*_ColorDrawBuffers
[MAX_DRAW_BUFFERS
][4];
2178 struct gl_renderbuffer
*_ColorReadBuffer
;
2180 /** The Actual depth/stencil buffers to use. May be wrappers around the
2181 * depth/stencil buffers attached above. */
2182 struct gl_renderbuffer
*_DepthBuffer
;
2183 struct gl_renderbuffer
*_StencilBuffer
;
2185 /** Delete this framebuffer */
2186 void (*Delete
)(struct gl_framebuffer
*fb
);
2191 * Limits for vertex and fragment programs.
2193 struct gl_program_constants
2195 /* logical limits */
2196 GLuint MaxInstructions
;
2197 GLuint MaxAluInstructions
; /* fragment programs only, for now */
2198 GLuint MaxTexInstructions
; /* fragment programs only, for now */
2199 GLuint MaxTexIndirections
; /* fragment programs only, for now */
2202 GLuint MaxAddressRegs
; /* vertex program only, for now */
2203 GLuint MaxParameters
;
2204 GLuint MaxLocalParams
;
2205 GLuint MaxEnvParams
;
2206 /* native/hardware limits */
2207 GLuint MaxNativeInstructions
;
2208 GLuint MaxNativeAluInstructions
; /* fragment programs only, for now */
2209 GLuint MaxNativeTexInstructions
; /* fragment programs only, for now */
2210 GLuint MaxNativeTexIndirections
; /* fragment programs only, for now */
2211 GLuint MaxNativeAttribs
;
2212 GLuint MaxNativeTemps
;
2213 GLuint MaxNativeAddressRegs
; /* vertex program only, for now */
2214 GLuint MaxNativeParameters
;
2219 * Constants which may be overridden by device driver during context creation
2220 * but are never changed after that.
2224 GLint MaxTextureLevels
; /**< Maximum number of allowed mipmap levels. */
2225 GLint Max3DTextureLevels
; /**< Maximum number of allowed mipmap levels for 3D texture targets. */
2226 GLint MaxCubeTextureLevels
; /**< Maximum number of allowed mipmap levels for GL_ARB_texture_cube_map */
2227 GLint MaxTextureRectSize
; /* GL_NV_texture_rectangle */
2228 GLuint MaxTextureCoordUnits
;
2229 GLuint MaxTextureImageUnits
;
2230 GLuint MaxTextureUnits
; /* = MAX(CoordUnits, ImageUnits) */
2231 GLfloat MaxTextureMaxAnisotropy
; /* GL_EXT_texture_filter_anisotropic */
2232 GLfloat MaxTextureLodBias
; /* GL_EXT_texture_lod_bias */
2233 GLuint MaxArrayLockSize
;
2235 GLfloat MinPointSize
, MaxPointSize
; /* aliased */
2236 GLfloat MinPointSizeAA
, MaxPointSizeAA
; /* antialiased */
2237 GLfloat PointSizeGranularity
;
2238 GLfloat MinLineWidth
, MaxLineWidth
; /* aliased */
2239 GLfloat MinLineWidthAA
, MaxLineWidthAA
; /* antialiased */
2240 GLfloat LineWidthGranularity
;
2241 GLuint MaxColorTableSize
;
2242 GLuint MaxConvolutionWidth
;
2243 GLuint MaxConvolutionHeight
;
2244 GLuint MaxClipPlanes
;
2246 GLfloat MaxShininess
; /* GL_NV_light_max_exponent */
2247 GLfloat MaxSpotExponent
; /* GL_NV_light_max_exponent */
2248 GLuint MaxViewportWidth
, MaxViewportHeight
;
2249 struct gl_program_constants VertexProgram
; /* GL_ARB_vertex_program */
2250 struct gl_program_constants FragmentProgram
; /* GL_ARB_fragment_program */
2251 /* shared by vertex and fragment program: */
2252 GLuint MaxProgramMatrices
;
2253 GLuint MaxProgramMatrixStackDepth
;
2254 /* vertex array / buffer object bounds checking */
2255 GLboolean CheckArrayBounds
;
2256 /* GL_ARB_draw_buffers */
2257 GLuint MaxDrawBuffers
;
2258 /* GL_OES_read_format */
2259 GLenum ColorReadFormat
;
2260 GLenum ColorReadType
;
2261 /* GL_EXT_framebuffer_object */
2262 GLuint MaxColorAttachments
;
2263 GLuint MaxRenderbufferSize
;
2268 * Enable flag for each OpenGL extension. Different device drivers will
2269 * enable different extensions at runtime.
2271 struct gl_extensions
2274 * \name Flags to quickly test if certain extensions are available.
2276 * Not every extension needs to have such a flag, but it's encouraged.
2279 GLboolean dummy
; /* don't remove this! */
2280 GLboolean ARB_depth_texture
;
2281 GLboolean ARB_draw_buffers
;
2282 GLboolean ARB_fragment_program
;
2283 GLboolean ARB_fragment_shader
;
2284 GLboolean ARB_half_float_pixel
;
2285 GLboolean ARB_imaging
;
2286 GLboolean ARB_multisample
;
2287 GLboolean ARB_multitexture
;
2288 GLboolean ARB_occlusion_query
;
2289 GLboolean ARB_point_sprite
;
2290 GLboolean ARB_shader_objects
;
2291 GLboolean ARB_shading_language_100
;
2292 GLboolean ARB_shadow
;
2293 GLboolean ARB_texture_border_clamp
;
2294 GLboolean ARB_texture_compression
;
2295 GLboolean ARB_texture_cube_map
;
2296 GLboolean ARB_texture_env_combine
;
2297 GLboolean ARB_texture_env_crossbar
;
2298 GLboolean ARB_texture_env_dot3
;
2299 GLboolean ARB_texture_float
;
2300 GLboolean ARB_texture_mirrored_repeat
;
2301 GLboolean ARB_texture_non_power_of_two
;
2302 GLboolean ARB_transpose_matrix
;
2303 GLboolean ARB_vertex_buffer_object
;
2304 GLboolean ARB_vertex_program
;
2305 GLboolean ARB_vertex_shader
;
2306 GLboolean ARB_window_pos
;
2309 GLboolean EXT_blend_color
;
2310 GLboolean EXT_blend_equation_separate
;
2311 GLboolean EXT_blend_func_separate
;
2312 GLboolean EXT_blend_logic_op
;
2313 GLboolean EXT_blend_minmax
;
2314 GLboolean EXT_blend_subtract
;
2315 GLboolean EXT_clip_volume_hint
;
2316 GLboolean EXT_cull_vertex
;
2317 GLboolean EXT_convolution
;
2318 GLboolean EXT_compiled_vertex_array
;
2319 GLboolean EXT_copy_texture
;
2320 GLboolean EXT_depth_bounds_test
;
2321 GLboolean EXT_draw_range_elements
;
2322 GLboolean EXT_framebuffer_object
;
2323 GLboolean EXT_fog_coord
;
2324 GLboolean EXT_framebuffer_blit
;
2325 GLboolean EXT_histogram
;
2326 GLboolean EXT_multi_draw_arrays
;
2327 GLboolean EXT_paletted_texture
;
2328 GLboolean EXT_packed_depth_stencil
;
2329 GLboolean EXT_packed_pixels
;
2330 GLboolean EXT_pixel_buffer_object
;
2331 GLboolean EXT_point_parameters
;
2332 GLboolean EXT_polygon_offset
;
2333 GLboolean EXT_rescale_normal
;
2334 GLboolean EXT_shadow_funcs
;
2335 GLboolean EXT_secondary_color
;
2336 GLboolean EXT_separate_specular_color
;
2337 GLboolean EXT_shared_texture_palette
;
2338 GLboolean EXT_stencil_wrap
;
2339 GLboolean EXT_stencil_two_side
;
2340 GLboolean EXT_subtexture
;
2341 GLboolean EXT_texture
;
2342 GLboolean EXT_texture_object
;
2343 GLboolean EXT_texture3D
;
2344 GLboolean EXT_texture_compression_s3tc
;
2345 GLboolean EXT_texture_env_add
;
2346 GLboolean EXT_texture_env_combine
;
2347 GLboolean EXT_texture_env_dot3
;
2348 GLboolean EXT_texture_filter_anisotropic
;
2349 GLboolean EXT_texture_lod_bias
;
2350 GLboolean EXT_texture_mirror_clamp
;
2351 GLboolean EXT_timer_query
;
2352 GLboolean EXT_vertex_array
;
2353 GLboolean EXT_vertex_array_set
;
2354 /* vendor extensions */
2355 GLboolean APPLE_client_storage
;
2356 GLboolean APPLE_packed_pixels
;
2357 GLboolean ATI_texture_mirror_once
;
2358 GLboolean ATI_texture_env_combine3
;
2359 GLboolean ATI_fragment_shader
;
2360 GLboolean IBM_rasterpos_clip
;
2361 GLboolean IBM_multimode_draw_arrays
;
2362 GLboolean MESA_pack_invert
;
2363 GLboolean MESA_packed_depth_stencil
;
2364 GLboolean MESA_program_debug
;
2365 GLboolean MESA_resize_buffers
;
2366 GLboolean MESA_ycbcr_texture
;
2367 GLboolean NV_blend_square
;
2368 GLboolean NV_fragment_program
;
2369 GLboolean NV_light_max_exponent
;
2370 GLboolean NV_point_sprite
;
2371 GLboolean NV_texgen_reflection
;
2372 GLboolean NV_texture_rectangle
;
2373 GLboolean NV_vertex_program
;
2374 GLboolean NV_vertex_program1_1
;
2375 GLboolean OES_read_format
;
2376 GLboolean SGI_color_matrix
;
2377 GLboolean SGI_color_table
;
2378 GLboolean SGI_texture_color_table
;
2379 GLboolean SGIS_generate_mipmap
;
2380 GLboolean SGIS_texture_edge_clamp
;
2381 GLboolean SGIS_texture_lod
;
2382 GLboolean SGIX_depth_texture
;
2383 GLboolean SGIX_shadow
;
2384 GLboolean SGIX_shadow_ambient
; /* or GL_ARB_shadow_ambient */
2385 GLboolean TDFX_texture_compression_FXT1
;
2388 /* The extension string */
2389 const GLubyte
*String
;
2394 * A stack of matrices (projection, modelview, color, texture, etc).
2398 GLmatrix
*Top
; /**< points into Stack */
2399 GLmatrix
*Stack
; /**< array [MaxDepth] of GLmatrix */
2400 GLuint Depth
; /**< 0 <= Depth < MaxDepth */
2401 GLuint MaxDepth
; /**< size of Stack[] array */
2402 GLuint DirtyFlag
; /**< _NEW_MODELVIEW or _NEW_PROJECTION, for example */
2407 * \name Bits for image transfer operations
2409 * \sa __GLcontextRec::ImageTransferState.
2412 #define IMAGE_SCALE_BIAS_BIT 0x1
2413 #define IMAGE_SHIFT_OFFSET_BIT 0x2
2414 #define IMAGE_MAP_COLOR_BIT 0x4
2415 #define IMAGE_COLOR_TABLE_BIT 0x8
2416 #define IMAGE_CONVOLUTION_BIT 0x10
2417 #define IMAGE_POST_CONVOLUTION_SCALE_BIAS 0x20
2418 #define IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT 0x40
2419 #define IMAGE_COLOR_MATRIX_BIT 0x80
2420 #define IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT 0x100
2421 #define IMAGE_HISTOGRAM_BIT 0x200
2422 #define IMAGE_MIN_MAX_BIT 0x400
2423 #define IMAGE_CLAMP_BIT 0x800 /* extra */
2426 /** Pixel Transfer ops up to convolution */
2427 #define IMAGE_PRE_CONVOLUTION_BITS (IMAGE_SCALE_BIAS_BIT | \
2428 IMAGE_SHIFT_OFFSET_BIT | \
2429 IMAGE_MAP_COLOR_BIT | \
2430 IMAGE_COLOR_TABLE_BIT)
2432 /** Pixel transfer ops after convolution */
2433 #define IMAGE_POST_CONVOLUTION_BITS (IMAGE_POST_CONVOLUTION_SCALE_BIAS | \
2434 IMAGE_POST_CONVOLUTION_COLOR_TABLE_BIT | \
2435 IMAGE_COLOR_MATRIX_BIT | \
2436 IMAGE_POST_COLOR_MATRIX_COLOR_TABLE_BIT |\
2437 IMAGE_HISTOGRAM_BIT | \
2443 * \name Bits to indicate what state has changed.
2448 #define _NEW_MODELVIEW 0x1 /**< __GLcontextRec::ModelView */
2449 #define _NEW_PROJECTION 0x2 /**< __GLcontextRec::Projection */
2450 #define _NEW_TEXTURE_MATRIX 0x4 /**< __GLcontextRec::TextureMatrix */
2451 #define _NEW_COLOR_MATRIX 0x8 /**< __GLcontextRec::ColorMatrix */
2452 #define _NEW_ACCUM 0x10 /**< __GLcontextRec::Accum */
2453 #define _NEW_COLOR 0x20 /**< __GLcontextRec::Color */
2454 #define _NEW_DEPTH 0x40 /**< __GLcontextRec::Depth */
2455 #define _NEW_EVAL 0x80 /**< __GLcontextRec::Eval, __GLcontextRec::EvalMap */
2456 #define _NEW_FOG 0x100 /**< __GLcontextRec::Fog */
2457 #define _NEW_HINT 0x200 /**< __GLcontextRec::Hint */
2458 #define _NEW_LIGHT 0x400 /**< __GLcontextRec::Light */
2459 #define _NEW_LINE 0x800 /**< __GLcontextRec::Line */
2460 #define _NEW_PIXEL 0x1000 /**< __GLcontextRec::Pixel */
2461 #define _NEW_POINT 0x2000 /**< __GLcontextRec::Point */
2462 #define _NEW_POLYGON 0x4000 /**< __GLcontextRec::Polygon */
2463 #define _NEW_POLYGONSTIPPLE 0x8000 /**< __GLcontextRec::PolygonStipple */
2464 #define _NEW_SCISSOR 0x10000 /**< __GLcontextRec::Scissor */
2465 #define _NEW_STENCIL 0x20000 /**< __GLcontextRec::Stencil */
2466 #define _NEW_TEXTURE 0x40000 /**< __GLcontextRec::Texture */
2467 #define _NEW_TRANSFORM 0x80000 /**< __GLcontextRec::Transform */
2468 #define _NEW_VIEWPORT 0x100000 /**< __GLcontextRec::Viewport */
2469 #define _NEW_PACKUNPACK 0x200000 /**< __GLcontextRec::Pack, __GLcontextRec::Unpack */
2470 #define _NEW_ARRAY 0x400000 /**< __GLcontextRec::Array */
2471 #define _NEW_RENDERMODE 0x800000 /**< __GLcontextRec::RenderMode, __GLcontextRec::Feedback, __GLcontextRec::Select */
2472 #define _NEW_BUFFERS 0x1000000 /**< __GLcontextRec::Visual, __GLcontextRec::DrawBuffer, */
2473 #define _NEW_MULTISAMPLE 0x2000000 /**< __GLcontextRec::Multisample */
2474 #define _NEW_TRACK_MATRIX 0x4000000 /**< __GLcontextRec::VertexProgram */
2475 #define _NEW_PROGRAM 0x8000000 /**< __GLcontextRec::VertexProgram */
2481 * \name Bits to track array state changes
2483 * Also used to summarize array enabled.
2486 #define _NEW_ARRAY_VERTEX VERT_BIT_POS
2487 #define _NEW_ARRAY_WEIGHT VERT_BIT_WEIGHT
2488 #define _NEW_ARRAY_NORMAL VERT_BIT_NORMAL
2489 #define _NEW_ARRAY_COLOR0 VERT_BIT_COLOR0
2490 #define _NEW_ARRAY_COLOR1 VERT_BIT_COLOR1
2491 #define _NEW_ARRAY_FOGCOORD VERT_BIT_FOG
2492 #define _NEW_ARRAY_INDEX VERT_BIT_SIX
2493 #define _NEW_ARRAY_EDGEFLAG VERT_BIT_SEVEN
2494 #define _NEW_ARRAY_TEXCOORD_0 VERT_BIT_TEX0
2495 #define _NEW_ARRAY_TEXCOORD_1 VERT_BIT_TEX1
2496 #define _NEW_ARRAY_TEXCOORD_2 VERT_BIT_TEX2
2497 #define _NEW_ARRAY_TEXCOORD_3 VERT_BIT_TEX3
2498 #define _NEW_ARRAY_TEXCOORD_4 VERT_BIT_TEX4
2499 #define _NEW_ARRAY_TEXCOORD_5 VERT_BIT_TEX5
2500 #define _NEW_ARRAY_TEXCOORD_6 VERT_BIT_TEX6
2501 #define _NEW_ARRAY_TEXCOORD_7 VERT_BIT_TEX7
2502 #define _NEW_ARRAY_ATTRIB_0 0x10000 /* start at bit 16 */
2503 #define _NEW_ARRAY_ALL 0xffffffff
2506 #define _NEW_ARRAY_TEXCOORD(i) (_NEW_ARRAY_TEXCOORD_0 << (i))
2507 #define _NEW_ARRAY_ATTRIB(i) (_NEW_ARRAY_ATTRIB_0 << (i))
2512 * \name A bunch of flags that we think might be useful to drivers.
2514 * Set in the __GLcontextRec::_TriangleCaps bitfield.
2517 #define DD_FLATSHADE 0x1
2518 #define DD_SEPARATE_SPECULAR 0x2
2519 #define DD_TRI_CULL_FRONT_BACK 0x4 /* special case on some hw */
2520 #define DD_TRI_LIGHT_TWOSIDE 0x8
2521 #define DD_TRI_UNFILLED 0x10
2522 #define DD_TRI_SMOOTH 0x20
2523 #define DD_TRI_STIPPLE 0x40
2524 #define DD_TRI_OFFSET 0x80
2525 #define DD_LINE_SMOOTH 0x100
2526 #define DD_LINE_STIPPLE 0x200
2527 #define DD_LINE_WIDTH 0x400
2528 #define DD_POINT_SMOOTH 0x800
2529 #define DD_POINT_SIZE 0x1000
2530 #define DD_POINT_ATTEN 0x2000
2531 #define DD_TRI_TWOSTENCIL 0x4000
2536 * \name Define the state changes under which each of these bits might change
2539 #define _DD_NEW_FLATSHADE _NEW_LIGHT
2540 #define _DD_NEW_SEPARATE_SPECULAR (_NEW_LIGHT | _NEW_FOG | _NEW_PROGRAM)
2541 #define _DD_NEW_TRI_CULL_FRONT_BACK _NEW_POLYGON
2542 #define _DD_NEW_TRI_LIGHT_TWOSIDE _NEW_LIGHT
2543 #define _DD_NEW_TRI_UNFILLED _NEW_POLYGON
2544 #define _DD_NEW_TRI_SMOOTH _NEW_POLYGON
2545 #define _DD_NEW_TRI_STIPPLE _NEW_POLYGON
2546 #define _DD_NEW_TRI_OFFSET _NEW_POLYGON
2547 #define _DD_NEW_LINE_SMOOTH _NEW_LINE
2548 #define _DD_NEW_LINE_STIPPLE _NEW_LINE
2549 #define _DD_NEW_LINE_WIDTH _NEW_LINE
2550 #define _DD_NEW_POINT_SMOOTH _NEW_POINT
2551 #define _DD_NEW_POINT_SIZE _NEW_POINT
2552 #define _DD_NEW_POINT_ATTEN _NEW_POINT
2556 #define _MESA_NEW_NEED_EYE_COORDS (_NEW_LIGHT | \
2561 #define _MESA_NEW_NEED_NORMALS (_NEW_LIGHT | \
2564 #define _IMAGE_NEW_TRANSFER_STATE (_NEW_PIXEL | _NEW_COLOR_MATRIX)
2570 * Forward declaration of display list data types:
2573 typedef union node Node
;
2576 /* This has to be included here. */
2580 #define NUM_VERTEX_FORMAT_ENTRIES (sizeof(GLvertexformat) / sizeof(void *))
2583 * Core Mesa's support for tnl modules:
2585 struct gl_tnl_module
2588 * Vertex format to be lazily swapped into current dispatch.
2590 const GLvertexformat
*Current
;
2593 * \name Record of functions swapped out.
2594 * On restore, only need to swap these functions back in.
2598 _glapi_proc
* location
;
2599 _glapi_proc function
;
2600 } Swapped
[NUM_VERTEX_FORMAT_ENTRIES
];
2605 /* Strictly this is a tnl/ private concept, but it doesn't seem
2606 * worthwhile adding a tnl private structure just to hold this one bit
2609 #define MESA_DLIST_DANGLING_REFS 0x1
2611 /* Provide a location where information about a display list can be
2612 * collected. Could be extended with driverPrivate structures,
2613 * etc. in the future.
2615 struct mesa_display_list
2624 * State used during display list compilation and execution.
2626 struct mesa_list_state
2628 struct mesa_display_list
*CallStack
[MAX_LIST_NESTING
];
2629 GLuint CallDepth
; /**< Current recursion calling depth */
2631 struct mesa_display_list
*CurrentList
;
2632 Node
*CurrentListPtr
; /**< Head of list being compiled */
2633 GLuint CurrentListNum
; /**< Number of the list being compiled */
2634 Node
*CurrentBlock
; /**< Pointer to current block of nodes */
2635 GLuint CurrentPos
; /**< Index into current block of nodes */
2637 GLvertexformat ListVtxfmt
;
2639 GLubyte ActiveAttribSize
[VERT_ATTRIB_MAX
];
2640 GLfloat CurrentAttrib
[VERT_ATTRIB_MAX
][4];
2642 GLubyte ActiveMaterialSize
[MAT_ATTRIB_MAX
];
2643 GLfloat CurrentMaterial
[MAT_ATTRIB_MAX
][4];
2645 GLubyte ActiveIndex
;
2646 GLfloat CurrentIndex
;
2648 GLubyte ActiveEdgeFlag
;
2649 GLboolean CurrentEdgeFlag
;
2654 * Mesa rendering context.
2656 * This is the central context data structure for Mesa. Almost all
2657 * OpenGL state is contained in this structure.
2658 * Think of this as a base class from which device drivers will derive
2661 * The GLcontext typedef names this structure.
2663 struct __GLcontextRec
2666 * \name OS related interfaces.
2668 * These \b must be the first members of this structure, because they are
2669 * exposed to the outside world (i.e. GLX extension).
2672 __GLimports imports
;
2673 __GLexports exports
;
2676 /** State possibly shared with other contexts in the address space */
2677 struct gl_shared_state
*Shared
;
2679 /** \name API function pointer tables */
2681 struct _glapi_table
*Save
; /**< Display list save functions */
2682 struct _glapi_table
*Exec
; /**< Execute functions */
2683 struct _glapi_table
*CurrentDispatch
; /**< == Save or Exec !! */
2687 GLframebuffer
*DrawBuffer
; /**< buffer for writing */
2688 GLframebuffer
*ReadBuffer
; /**< buffer for reading */
2689 GLframebuffer
*WinSysDrawBuffer
; /**< set with MakeCurrent */
2690 GLframebuffer
*WinSysReadBuffer
; /**< set with MakeCurrent */
2693 * Device driver function pointer table
2695 struct dd_function_table Driver
;
2697 void *DriverCtx
; /**< Points to device driver context/state */
2698 void *DriverMgrCtx
; /**< Points to device driver manager (optional)*/
2700 /** Core/Driver constants */
2701 struct gl_constants Const
;
2703 /** \name The various 4x4 matrix stacks */
2705 struct matrix_stack ModelviewMatrixStack
;
2706 struct matrix_stack ProjectionMatrixStack
;
2707 struct matrix_stack ColorMatrixStack
;
2708 struct matrix_stack TextureMatrixStack
[MAX_TEXTURE_COORD_UNITS
];
2709 struct matrix_stack ProgramMatrixStack
[MAX_PROGRAM_MATRICES
];
2710 struct matrix_stack
*CurrentStack
; /**< Points to one of the above stacks */
2713 /** Combined modelview and projection matrix */
2714 GLmatrix _ModelProjectMatrix
;
2716 /** \name Display lists */
2717 struct mesa_list_state ListState
;
2719 GLboolean ExecuteFlag
; /**< Execute GL commands? */
2720 GLboolean CompileFlag
; /**< Compile GL commands into display list? */
2722 /** Extension information */
2723 struct gl_extensions Extensions
;
2725 /** \name State attribute stack (for glPush/PopAttrib) */
2727 GLuint AttribStackDepth
;
2728 struct gl_attrib_node
*AttribStack
[MAX_ATTRIB_STACK_DEPTH
];
2731 /** \name Renderer attribute groups
2733 * We define a struct for each attribute group to make pushing and popping
2734 * attributes easy. Also it's a good organization.
2737 struct gl_accum_attrib Accum
; /**< Accum buffer attributes */
2738 struct gl_colorbuffer_attrib Color
; /**< Color buffer attributes */
2739 struct gl_current_attrib Current
; /**< Current attributes */
2740 struct gl_depthbuffer_attrib Depth
; /**< Depth buffer attributes */
2741 struct gl_eval_attrib Eval
; /**< Eval attributes */
2742 struct gl_fog_attrib Fog
; /**< Fog attributes */
2743 struct gl_hint_attrib Hint
; /**< Hint attributes */
2744 struct gl_light_attrib Light
; /**< Light attributes */
2745 struct gl_line_attrib Line
; /**< Line attributes */
2746 struct gl_list_attrib List
; /**< List attributes */
2747 struct gl_multisample_attrib Multisample
;
2748 struct gl_pixel_attrib Pixel
; /**< Pixel attributes */
2749 struct gl_point_attrib Point
; /**< Point attributes */
2750 struct gl_polygon_attrib Polygon
; /**< Polygon attributes */
2751 GLuint PolygonStipple
[32]; /**< Polygon stipple */
2752 struct gl_scissor_attrib Scissor
; /**< Scissor attributes */
2753 struct gl_stencil_attrib Stencil
; /**< Stencil buffer attributes */
2754 struct gl_texture_attrib Texture
; /**< Texture attributes */
2755 struct gl_transform_attrib Transform
; /**< Transformation attributes */
2756 struct gl_viewport_attrib Viewport
; /**< Viewport attributes */
2759 /** \name Client attribute stack */
2761 GLuint ClientAttribStackDepth
;
2762 struct gl_attrib_node
*ClientAttribStack
[MAX_CLIENT_ATTRIB_STACK_DEPTH
];
2765 /** \name Client attribute groups */
2767 struct gl_array_attrib Array
; /**< Vertex arrays */
2768 struct gl_pixelstore_attrib Pack
; /**< Pixel packing */
2769 struct gl_pixelstore_attrib Unpack
; /**< Pixel unpacking */
2770 struct gl_pixelstore_attrib DefaultPacking
; /**< Default params */
2773 /** \name Other assorted state (not pushed/popped on attribute stack) */
2775 struct gl_histogram_attrib Histogram
;
2776 struct gl_minmax_attrib MinMax
;
2777 struct gl_convolution_attrib Convolution1D
;
2778 struct gl_convolution_attrib Convolution2D
;
2779 struct gl_convolution_attrib Separable2D
;
2781 struct gl_evaluators EvalMap
; /**< All evaluators */
2782 struct gl_feedback Feedback
; /**< Feedback */
2783 struct gl_selection Select
; /**< Selection */
2785 struct gl_color_table ColorTable
; /**< Pre-convolution */
2786 struct gl_color_table ProxyColorTable
; /**< Pre-convolution */
2787 struct gl_color_table PostConvolutionColorTable
;
2788 struct gl_color_table ProxyPostConvolutionColorTable
;
2789 struct gl_color_table PostColorMatrixColorTable
;
2790 struct gl_color_table ProxyPostColorMatrixColorTable
;
2792 struct gl_program_state Program
; /**< for vertex or fragment progs */
2793 struct gl_vertex_program_state VertexProgram
; /**< GL_NV_vertex_program */
2794 struct gl_fragment_program_state FragmentProgram
; /**< GL_NV_fragment_program */
2795 struct gl_ati_fragment_shader_state ATIFragmentShader
; /**< GL_ATI_fragment_shader */
2797 struct fragment_program
*_TexEnvProgram
; /**< Texture state as fragment program */
2798 struct vertex_program
*_TnlProgram
; /**< Fixed func TNL state as vertex program */
2800 GLboolean _MaintainTnlProgram
;
2801 GLboolean _MaintainTexEnvProgram
;
2802 GLboolean _UseTexEnvProgram
;
2804 struct gl_query_state Query
; /**< GL_ARB_occlusion_query */
2806 struct gl_shader_objects_state ShaderObjects
; /* GL_ARB_shader_objects */
2809 #if FEATURE_EXT_framebuffer_object
2810 struct gl_renderbuffer
*CurrentRenderbuffer
;
2813 GLenum ErrorValue
; /**< Last error code */
2814 GLenum RenderMode
; /**< either GL_RENDER, GL_SELECT, GL_FEEDBACK */
2815 GLbitfield NewState
; /**< bitwise-or of _NEW_* flags */
2817 /** \name Derived state */
2819 GLbitfield _TriangleCaps
; /**< bitwise-or of DD_* flags */
2820 GLbitfield _ImageTransferState
;/**< bitwise-or of IMAGE_*_BIT flags */
2821 GLfloat _EyeZDir
[3];
2822 GLfloat _ModelViewInvScale
;
2823 GLboolean _NeedEyeCoords
;
2824 GLboolean _ForceEyeCoords
;
2825 GLboolean _RotateMode
;
2826 GLenum _CurrentProgram
; /* currently executing program */
2828 struct gl_shine_tab
*_ShineTable
[2]; /**< Active shine tables */
2829 struct gl_shine_tab
*_ShineTabList
; /**< MRU list of inactive shine tables */
2832 struct gl_list_extensions ListExt
; /**< driver dlist extensions */
2835 GLuint _Facing
; /**< This is a hack for 2-sided stencil test.
2837 * We don't have a better way to communicate this value from
2838 * swrast_setup to swrast. */
2840 /** \name For debugging/development only */
2842 GLboolean FirstTimeCurrent
;
2845 /** Dither disable via MESA_NO_DITHER env var */
2848 /** software compression/decompression supported or not */
2849 GLboolean Mesa_DXTn
;
2851 /** Core tnl module support */
2852 struct gl_tnl_module TnlModule
;
2855 * \name Hooks for module contexts.
2857 * These will eventually live in the driver or elsewhere.
2860 void *swrast_context
;
2861 void *swsetup_context
;
2862 void *swtnl_context
;
2864 void *acache_context
;
2870 /** The string names for GL_POINT, GL_LINE_LOOP, etc */
2871 extern const char *_mesa_prim_name
[GL_POLYGON
+4];
2875 extern int MESA_VERBOSE
;
2876 extern int MESA_DEBUG_FLAGS
;
2877 # define MESA_FUNCTION __FUNCTION__
2879 # define MESA_VERBOSE 0
2880 # define MESA_DEBUG_FLAGS 0
2881 # define MESA_FUNCTION "a function"
2890 VERBOSE_VARRAY
= 0x0001,
2891 VERBOSE_TEXTURE
= 0x0002,
2892 VERBOSE_IMMEDIATE
= 0x0004,
2893 VERBOSE_PIPELINE
= 0x0008,
2894 VERBOSE_DRIVER
= 0x0010,
2895 VERBOSE_STATE
= 0x0020,
2896 VERBOSE_API
= 0x0040,
2897 VERBOSE_DISPLAY_LIST
= 0x0100,
2898 VERBOSE_LIGHTING
= 0x0200,
2899 VERBOSE_PRIMS
= 0x0400,
2900 VERBOSE_VERTS
= 0x0800,
2901 VERBOSE_DISASSEM
= 0x1000
2907 DEBUG_ALWAYS_FLUSH
= 0x1
2912 #define Elements(x) sizeof(x)/sizeof(*(x))
2915 #endif /* TYPES_H */